ClipArt ETC
"Ripe chick's skull, longitudinal section, vied inside, x 3 diameters; after parker. In the mandible are seen: mk, remarks of meckelian rod; d, dentary bone; sp, splenial; a, angular; su, surangular; ar, articular; iap, internal articular process; pap, posterior articular process. In the skull: pn, the original prenasal cartilage, upon which is moulded the premaxillary, px, with its nasal process, npx, and dentary process, dpx; sn, septo-nasal cartilage, in which is seen nn, nasal nerve; ntb, nasal turbinal; the reference line crosses the cranio-facial suture, the face parts and cranial parts being nealry separated here by the nick seen in the original cartilaginous plate; eth, ethmoid; pe, perpendicular plate of ethmoid, which will spread nearly throughout the dotted cartilaginous tract in which it lies, to form nearly all the interorbital septum; transverse thickening (in some birds) below the reference line eth will form the pre-frontal, or orbito-nasal septum; iof, inter-orbital foramen; ps, pre sphenoidal region, just above which is the orbito-sphenoidal region; 2, optic foramen; as, alisphenoid, with 5 foramen for division of the 5th (trifacial) nerve; f, frontal; sq, squamosal; p, parietal; so, superoccipital; asc, anterior semicircular canal; sc, a sinus (venous canal); ep, epiotic; eo, exoccipital; op, opisthotic; po, prootic, with 7 meatus auditorius internus, for entrance of 7th nerve; 8, foramen nfor vagus nerve; bo, basioccipital; bt, basitemporal; ic, canal (in original pituitary space; ) by which carotid artery enters brain activity; ap; basipterygoid process; ap to rbs, rostrum ofhte skull, being the parasphenoid bone underflooring the basisphenoid and future perpendicular plate of ethmoid." Elliot Coues, 1884

Ripe Chick's Skull

"Ripe chick's skull, longitudinal section, vied inside, x 3 diameters; after parker. In the mandible…

"Pseudogryphus californianus. California Condor. Adult: Blackish, the feathers with browner tips or edges, quite gray or even whitish on the wing-coverts and inner quills; primaries and tail-feathers black; axillars and lining of wings white; bill yellowish, reddening on cere, and skin of the head orange or reddish; iris said by some to be brown, by other carmine." Elliot Coues, 1884

California Condor

"Pseudogryphus californianus. California Condor. Adult: Blackish, the feathers with browner tips or…

"Fulicia. Coot. Bill and frontal plate much as in the Gallinultes. Body depressed; the under plumage thick and duck-like, to resist water. feet highly natatorial' toes, including the hinder, lobate, being furnished with large semicircular membranous flaps. The Coots are eminently aquatic birds, swimming with ease, by means of their lobate feet, like phalaropes and grebes; but this ability results from very slight modification of a structure shared by the Rails and Gallinules. There are about ten species, of both hemispheres, distinguished, among other characters, by the size and shape of the frontal shield. That, for instance, is of an exotic species, much larger than that of Fulica americana, and differently shaped. One species is remarkable for having the forehead singularly carunculate; the others closely resemble our common species." Elliott Coues, 1884

Coot Head

"Fulicia. Coot. Bill and frontal plate much as in the Gallinultes. Body depressed; the under plumage…

The Cormorant "P. carbo, but has a tuft of long narrow recurved plumes on each side f the crown in the nuptial dress, which are black, white, or particoloured according to the locality. The bare loral region and gular sac are orange, and no white is visible on the throat or flanks." A. H. Evans, 1900

Cormorant

The Cormorant "P. carbo, but has a tuft of long narrow recurved plumes on each side f the crown in the…

"Phalacrocorax bicristatus. Cormorant. The knee-joint of a Cormorants. F, femur; P, patella; T, tibia; Fb, fibula

The Knee-joint of a Cormorant

"Phalacrocorax bicristatus. Cormorant. The knee-joint of a Cormorants. F, femur; P, patella; T, tibia;…

"Phalacrocorax dilophus. Double-crested Cormorant. Tail of 12 feathers. Gular sac convex behind. No colored gorget. Glossy greenish-black; feathers of the back and wings coppery-gray, black-shafted, black-edged. Adult with curly black lateral crests in the breeding season, but few if any other filamentous white ones, over the eyes and along the sides of the neck; white flank-patch not observed in any specimens examined, probable not occurring; iris green; gular sac and lores orange. Winter spec. with bill bright yellow, blackening along culmen, gular sac red anteriorly, ochrey-yellow posteriorly; legs dull black." Elliot Coues, 1884

Double-crested Cormorant

"Phalacrocorax dilophus. Double-crested Cormorant. Tail of 12 feathers. Gular sac convex behind. No…

"Molothrus ater. Common Cowbird. Cuckold. male Adult: Lustrous green-black, with steel-blue, purple, and violet iridescence. head and neck deep wood-brown, with some purplish lustre. Bill and feet black." Elliot Coues, 1884

Common Cowbird

"Molothrus ater. Common Cowbird. Cuckold. male Adult: Lustrous green-black, with steel-blue, purple,…

"Coiling of the windpipe in the sternum of Grus canadensis. Sandhill Crane." Elliot Coues, 1884

Sandhill Crane Windpipe

"Coiling of the windpipe in the sternum of Grus canadensis. Sandhill Crane." Elliot Coues, 1884

"Very generally, in cranes and swans, the trachea enters the keel of the sternum, which is excavated to receive it, and where it forms one or more coils before emerging to pass to the lungs. This curious winding is carried to the extreme in our Grus americanus, the whoopong crane, in which the wind-pipe is about as long as the whole bird, and about half of it - over two feet of it! - is coiled away in the breast-bone." Elliot Coues

Whooping Crane Windpipe

"Very generally, in cranes and swans, the trachea enters the keel of the sternum, which is excavated…

"Black and White Creeper or Mniotilta varia. Black; edges of feathers of upper parts, coronal, superciliary, and maxillary stripes, tips of greater and median wing-coverts, outer edges of inner secondaries and inner edges of quills and tail-feathers, and spots on inner webs of lateral tail-feathers, white; under parts mostly white with black streaks on sides and crissum; bill and feet black. Similar: less black in proportion to the white, being mostly white below." Elliot Coues, 1884

Black and White Creeper

"Black and White Creeper or Mniotilta varia. Black; edges of feathers of upper parts, coronal, superciliary,…

"Common Brown Creeper. Upper parts dark brown, changing to rusty-brown on the rump, everywhere streaked with ashy-white. An obscure whitish superciliary stripe. Under parts dull whitish, sometimes tinged with rusty on the flanks and crissum. Wing-coverts and quills tipped with white, the inner secondaries also with white shaft-lines, which, with the tips, contrast the blackish of their outer webs. Wings also crossed with white or tawny-white, the anterior bar broad and occupying both webs of the feathers, the other only on the outer webs near their ends. Tail grayish-brown, darker along the shaft and at the ends of the feathers, sometimes showing obsolete transverse bars. Bill blackish above, mostly flesh-colored or yellowish below; feet brown; iris dark brown." Elliot Coues, 1884

Common Brown Creeper

"Common Brown Creeper. Upper parts dark brown, changing to rusty-brown on the rump, everywhere streaked…

"Certhiola flaveola. Honey Creeper. Dark brown above; long superciliary line and under parts dull white; breast, edging of wing, and rump, bright yellow; wings dusky, with a white spot at base of primaries, and whitish edging of the quills; tail dusky, tipped with white; bill and feet black; eyes blue." Elliot Coues, 1884

Honey Creeper

"Certhiola flaveola. Honey Creeper. Dark brown above; long superciliary line and under parts dull white;…

"Loxai curvirostra. American Red Crossbill. Red; wings and tail blackish, without white markings. Middle of back darker, more brownish-red than elsewhere, the feathers with dusky centres. In the highest feather, even, the red is scarcely continuous except on head and rump, where brightest; lower belly and crissum usually gray or pale. Though the shade of red is never rosy or carmine as in the last, it varies interminably. It is usually tilered or cinnabar, heightening in some cases to vermilion, in others shading to brownish-red, and often mixed not only with gray, but with olivaceous or saffron-yellowish tints. Orange, chrome or gamboge are sometimes seen." Elliot Coues, 1884

American Red Crossbill

"Loxai curvirostra. American Red Crossbill. Red; wings and tail blackish, without white markings. Middle…

"Loxia leucoptera. White-winged Crossbill. Rosy-red, sometimes carmined or even crimsoned, obscured on middle of back, paling on lower belly and crissum, latter whitish with dusky centres of the feathers. Scapulars black, this color sometimes meeting across lower back. Wing- and tail-feathers black, with white, forming two cross-bars, sometimes confluent in one large patch. Rather larger than the next, the bill thinner and more attenuate." Elliot Coues, 1884

White-winged Crossbill

"Loxia leucoptera. White-winged Crossbill. Rosy-red, sometimes carmined or even crimsoned, obscured…

"Gymnocitta cyanocephala. Blue Crow. Male: Dull blue, very variable in intensity, nearly uniform, but brightest on head, fading on belly; the throat with whitish streaks; wings dusky on the inner webs. Bill and feet black. Iris brown." Elliot Coues, 1884

Blue Crow

"Gymnocitta cyanocephala. Blue Crow. Male: Dull blue, very variable in intensity, nearly uniform, but…

"Coccygus americanus. Yellow-billed Cuckoo. Bill black, extensively yellow below and on the sides of upper mandible. Feet dark plumbeous. Above, satiny olive-gray. Below, pure white. Wings extensively cinnamon-rufous on inner webs of the quills. Central tail-feathers like the back; the rest black with large white tips, the outermost usually also edged with white. Very constant in color, the chief variation being in extent and intensity of the cinnamon on the wings, which sometimes shows through when the wings are closed, and even tinges the coverts. Young differ chiefly in having the white ends of the tail-feathers less trenchant and extensive, the black not so pure; this state approaches the condition of erthrophthalmus, but does not match it." Elliot Coues, 1884

Small Yellow-billed Cuckoo

"Coccygus americanus. Yellow-billed Cuckoo. Bill black, extensively yellow below and on the sides of…

"Coccygus americanus. Yellow-billed Cuckoo. Bill black, extensively yellow below and on the sides of upper mandible. Feet dark plumbeous. Above, satiny olive-gray. Below, pure white. Wings extensively cinnamon-rufous on inner webs of the quills. Central tail-feathers like the back; the rest black with large white tips, the outermost usually also edged with white. Very constant in color, the chief variation being in extent and intensity of the cinnamon on the wings, which sometimes shows through when the wings are closed, and even tinges the coverts. Young differ chiefly in having the white ends of the tail-feathers less trenchant and extensive, the black not so pure; this state approaches the condition of erthrophthalmus, but does not match it." Elliot Coues, 1884

Yellow-billed Cuckoo

"Coccygus americanus. Yellow-billed Cuckoo. Bill black, extensively yellow below and on the sides of…

"Numenius hudsonicus. Hudsonian Curlew Jack Curlew. General tone of coloration scarcely rufous, the under parts, and the variegation of the upper, being whitish or ochraceous. No white on rump, tail, or lining of wings. Top of head uniform blackish-brown, with well-defined whitish median and lateral stripes (as in phaeopus, but neither longirostris nor borealis). Upper parts brownish-black, speckled with whitish, ochraceous or pale cinnamon-brown, in same pattern as in longirostris, but the dark in excess of the light colors, and these never strongly rufescent. Tail ashy-brown (not rufous), with numerous narrow blackish bars. Primaries fuscous, marbled or broken-barred with pale color (pattern as in longirostris, tone not strongly rufous). Lining of wings and axillars rufescent, but spotted or barred throughout with dusky. Under parts soiled whitish or somewhat ochraceous, only obscurely rufescent on crissum, if anywhere; the jugulum and fore-breast with dusky streaks which, as in other species, change to arrow-heads or incomplete bars on sides of breast and body. Bill blackish, some part of lower mandible pale; feet dark." Elliot Coues, 1884

Hudsonian Curlew

"Numenius hudsonicus. Hudsonian Curlew Jack Curlew. General tone of coloration scarcely rufous, the…

"Numenius longirostris. Long-billed Curlew. Sickle-bill. Plumage very similar to that of the Godwit, Limosa faeda: prevailing tone rufous, of varying intensity in different specimens, usually deepest on the lining of the wings, which are little varied with other color. Primaries varied with rufous. Top of head variegated with blackish and rufous or whitish, without distinct pale median and lateral lines. Upper parts brownish-black, speckled with tawny or cinnamon-brown, each feather having several indentations or broken bars of this color; rufous prevailing on wing-coverts. Tail-feathers and secondaries cinnamon-brown, with pretty regular dark bars throughout. Under parts rufous or cinnamon of varying intensity, usually deepening to chestnut under the wings, fading to whitish on throat; the jugulum and fore-breast with dusky streaks which tend on the sides of breast and body to arrowheads or more or less complete bars; lining of wings, axillars, and crissum, mostly unmarked, though some spots may appear. No white on rump, tail, or wings. Bill black, much of under mandible pale-flesh-color or yellowish; legs dark. Little variation in plumage with sex, age, and season. Chicks hatch in whitish down, thickly blotched above with brownish-black; the bill straight, an inch long." Elliot Coues, 1884

long-billed Curlew

"Numenius longirostris. Long-billed Curlew. Sickle-bill. Plumage very similar to that of the Godwit,…

"Adult, in summer: Slaty-plumbeous, paler below, inclining on the head to sooty-brown. Quills and tail-feathers fuscous. Eyelids usually white. Bill black; feet yellowish." Elliot Coues, 1884

American Dipper

"Adult, in summer: Slaty-plumbeous, paler below, inclining on the head to sooty-brown. Quills and tail-feathers…

"Starnaenas cyanocephala. Blue-headed Quail Dove. Crown rich blue bounded by black; a white stripe under the eye, meeting its fellow on the chin; throat black, bordered with white. General color olivaceous-chocolate above, purplish-red below, lighter centrally." Elliot Coues, 1884

Blue-headed Quail Dove

"Starnaenas cyanocephala. Blue-headed Quail Dove. Crown rich blue bounded by black; a white stripe under…

"Zenaidura carolinensis. Carolina Dove. Mourning Dove. Wild Dove. Upper parts, including middle tail-feathers, grayish-blue shaded with brownish-olive, the head and neck ochrey-brown overlaid with glaucous-blue, the sides of the neck glittering with golden and ruby iridescence; a violet-black spot under the ear-coverts. Under parts glaucous-purplish, changing gradually to ochraceous on the belly and crissum, to bluish on the sides and under the wings, to whitish on the chin; the purplish tint spreading up on the sides and front of the head to blend with the glaucous-blue. Black spots on some of the scapulars and wing-coverts, most of which are colored to correspond with the back, the larger ones being rather bluish-plumbeous. Lateral tail-feathers plumbeous-bluish, crossed with a black bar, the outer four on each side broadly ended with white. Bill black; angle of mouth carmine; iris brown; bare skin around eye livid bluish; feet lake-red, drying dull yellowish." Elliot Coues, 1884

Carolina Dove

"Zenaidura carolinensis. Carolina Dove. Mourning Dove. Wild Dove. Upper parts, including middle tail-feathers,…

Columba palumbus. European Ring Dove. Wood Pigeon. Plumage is gray with a pinkish-purplish breast and white on wing and neck.

European Ring Dove

Columba palumbus. European Ring Dove. Wood Pigeon. Plumage is gray with a pinkish-purplish breast and…

"Dafila. Pin-tail Ducks. Tail (in adult male) narrow, cuneate, when fully developed nearly as long as wing, the 2 central feathers long-exserted, linear-acute: in female and young the tail merely tapering, with acute feathers; tail-feathers 16, including the long middle pair. Bill shorter than head, longer than tarsus, nearly parallel sided, widening a little to the end, the nail small, the narrow nostrils high up in basal third of bill. Feathers of cheeks sweeping in strongly convex outline along side of upper mandible, beyond those on side of lower mandible. Wing acute, the 1st and 2d primaries subequal and longest, rest rapidly graduated. Neck unusually long and slender, and form less "stocky" than that of most ducks. Sexes and young very unlike in color, even to the wing-markings, as well as in shape of tail. Bill and feet dark. Under parts white or whitish." Elliot Coues, 1884

Pin-tail Duck Head

"Dafila. Pin-tail Ducks. Tail (in adult male) narrow, cuneate, when fully developed nearly as long as…

"Camptolaemus labradorius. Labrador Duck. Pied Duck. Adult male: Bill black with orange at base and along edges, and grayish-blue along the ridge; iris reddish-brown; feet grayish-blue, with dusky webs and claws. Head and upper neck white, with a longitudinal black stripe on the crown and nape. Neck below ringed with black continuous with that of upper parts, then half-collared with white continuous with that of scapulars. Below, from this white, entirely black, excepting white axillars and lining of wings. Above, black, except as said; the wing-coverts and secondaries white, some of the latter margined with black; some of the long scapulars pearly-gray; primaries and their coverts and tail-feathers brownish-black. Female: Bill, eyes, and tail-feathers brownish-black. Bill, eyes, and feet as in male; several secondaries white, forming a speculum, but no white on wing-coverts or scapulars; axillars and lining of wings mostly white; inner secondaries edged with black; general color dappled brownish-gray, paler and more ashy or plumbeous on wing-coverts and inner secondaries." Elliot Coues, 1884

Labrador Duck

"Camptolaemus labradorius. Labrador Duck. Pied Duck. Adult male: Bill black with orange at base and…

"Oidemia perspicillata. Surf Duck. Sea Coot. Adult male: Bill as above, singularly variegated in color, mostly white in pinkish, and orange, with a great round or squarish black spot on side near base; iris pale yellow; feet orange, with dusky webs. Plumage glossy black, duller below; no white on wings, but a triangular white patch on forehead, pointing forward, reaching to or beyond opposite eye, and another on nape, pointing downward. Young male resembles female, before the bill acquires distinctive shape and color. Female blackish, not tumid, feathers of culmen restricted, not reaching opposite nostrils; feet dark, tinged with reddish, the webs blackish. Plumage sooty-brown, below silvery-gray; side of head with much whitish, chiefly in two patches, loral and auricular; no frontal or nuchal white." Elliot Coues, 1884

Surf Duck

"Oidemia perspicillata. Surf Duck. Sea Coot. Adult male: Bill as above, singularly variegated in color,…

"Oidemia perspicillata trowbridgii. Trowbridge's Surf Duck, With the bill longer, exceeding the head, and o slightly different shape; feathers falling short of nostrils; gape 2.75; white frontal patch small, its posterior border anterior to a line between eyes, instead of reaching or passing beyond this." Elliot Coues, 1884

Trowbridge's Surf Duck

"Oidemia perspicillata trowbridgii. Trowbridge's Surf Duck, With the bill longer, exceeding the head,…

"Anus boscas. Mallard. Wild or Domestic Duck. Green-head. Bill greenish-yellow. Feet orange-red. Iris brown. Head and upper neck glossy-green, succeeded by a white ring. Breast purplish-chestnut. Lower back, rump, and tail-coverts glossy-black. Tail-feathers mostly whitish. Under parts from the breast, and scapulars, silvery-gray, finely undulated with dusky; crissum black. Speculum violet, purplish and greenish, framed in black and white tips of the greater coverts, and black terminal border. Feet and wings in the male, Bill blackish, blotched with orange, especially at base, tip and along edges. Entire body-colors with dusky-brown and tawny-brown; the tone paler and in finer pattern on the head, neck, and under parts than on the back." Elliot Coues, 1884

Wild Duck

"Anus boscas. Mallard. Wild or Domestic Duck. Green-head. Bill greenish-yellow. Feet orange-red. Iris…

"Aix sponsa. Wood Duck. Summer Duck. "The Bride." Adult Male: Bill pinkish-white, with lake-red base, black ridge, tip, and under mandible; iris and edges of eyelids red; feet orange, with black claws. Upper part of the head, including crest, glistening green and purple; a narrow white line over eye from bill to occiput, and another behind eye to nape, these white lines mixing in the crest. A broad white patch on the throat, forking behind, one branch mounting head behind eye, the other passing to side of neck. Sides and front of lower neck and fore breast rich purplish-chestnut, prettily marked with several chain of angular white spots. A large white black-edged crescent of enlarged feathers in front of the wing. Under parts pure white, the sides yellowish-gray vermiculated with black and white wavy bars; the enlarged flank-feathers broadly rayed with black and white; the lining of the wings white barred with grayish-brown, of which color is the crissum. Upper parts generally lustrous with bronzy-green and purple; scapulars and inner secondaries velvet-black, glassed with purple and green; a green speculum, succeeded by white tips of the secondaries; primaries frosted on outer webs near end. Adult female: Little or no crest, but lengthened feathers on nape; no enlargement or special colorings of feathers about the wings. Bill dusky: feet yellowish-dusky. Head and neck gray, darker on crown, the chin and parts about bill and eyes white. Fore neck, breast and sides of body yellowish-brown, mottled with dark gray, the breast spotted with brown, the belly white. Upper parts dark brown with considerable gloss; wings as in the male, but the velvety-black reduced." Elliot Coues, 1884

Wood Duck

"Aix sponsa. Wood Duck. Summer Duck. "The Bride." Adult Male: Bill pinkish-white, with lake-red base,…

"Dafila acuta. Pin-tail Duck. Sprig-tail. Bill black, with grayish-blue edge of upper mandible; feet grayish-blue; claws black; iris brown. Head and neck above rich dark brown, glossed with green and purple; side of neck with a long white stripe running up from the white under parts; back of neck with a black stripe passing below into the gray color of the back; the lower fore-neck, breast, and under parts usually, white, the sides finely waved with black, the crissum black, white-bordered. Fore back finely waved with narrow bars of black and white or whitish; the scapulars and long tertiaries firmly striped lengthwise with velvety-black and silvery-gray. Lesser wing-coverts plain gray; greater tipped with reddish-buff, framing the speculum anteriorly; this is of coppery-or purplish-violet iridescence, framed posteriorly with black sub-tips and white tips of the secondaries, internally with silvery and black stripes. Tail-feathers gray, the long central ones blackish; sides and roots of tail varied with blackish and buff. It is thus a very handsome duck in full plumage, aside from the trim and clipper-like build." Elliot Coues, 1884

Pin-tail Ducks

"Dafila acuta. Pin-tail Duck. Sprig-tail. Bill black, with grayish-blue edge of upper mandible; feet…

"Cochlea, X3. a, external, b, internal, cartilaginous prism; c, membranous zone; d, saccular extremity of the cochlea, or lagena; e, vascular membrane; f, auditory nerve, its middle fascicle penetrating the internal cartilaginous prism, to reach the membranous zone by its terminal filaments; g, auditory nerve, its posterior fascicle, running to the most posterior part of the lagena; h, filament to ampulla of posterior or inferior vertical semicircular canal." Elliot Coues, 1884

Eagle Cochlea

"Cochlea, X3. a, external, b, internal, cartilaginous prism; c, membranous zone; d, saccular extremity…

"Section of the cochlea, X3. a, vestibular surface of external cartilaginous prism, extending into d, the lagena; c, section of the membranous zone; e, Huschke's process of the fenestra, which, with the margins of the cartilaginous prisms, affords attachment Treviranus; i, canals in posterior wall of the lagena, by which the nervous filaments enter its cavity." Elliot Coues, 1884

A Section of an Eagle's Cochlea

"Section of the cochlea, X3. a, vestibular surface of external cartilaginous prism, extending into d,…

"Membranous labyrinth of Haliaetus albicilla (White-tailed Eagle), X2. a,b, cochlea; b, its saccular extremity (or lagena); c, vestibule; g, its utricle; d, anterior of superior vertical semicircular canal; e, external or horizontal semicircular canal; f, posterior of inferior vertical semicircular canal; h, membranous canal leading into aqueduct of the vestibule; k, vascular membrane covering the scala vestibuli; opposite this, at i, are seen the edges of the cartilaginous prisms in the fenestra rotunda; from the edges of these cartilages proceeds the delicate membrane closing the opening of the cochlea (not shown in the fi.)" Elliot Coues, 1884

The Inner Ear of a White-tailed Eagle

"Membranous labyrinth of Haliaetus albicilla (White-tailed Eagle), X2. a,b, cochlea; b, its saccular…

"Part of the superior vertical semicircular canal, showing its ampulla (which is the dilatation of the base of any semicircular canal), nerve of ampulla, artery connective tissue of the perilymph, X3, a, that part of the vestibule (alveus) next to the ampulla; b, the idlatation of the ampulla at its vestibular opening; c, where it passes into the canal proper; d, the canal, furnished with connective of the perilymph along its concave border and sides, as appears clearly at the sections e and f; g, nerve of the ampulla; h, artery of the connective tissue, running beneath it, remote from the wall of the duct." Elliot Coues, 1884

Eagle's Ampulal

"Part of the superior vertical semicircular canal, showing its ampulla (which is the dilatation of the…

"Membranous labyrinth of Haliaetus albicilla (White-tailed Eagle), X2. a,b, cochlea; b, its saccular extremity (or lagena); c, vestibule; g, its utricle; d, anterior of superior vertical semicircular canal; e, external or horizontal semicircular canal; f, posterior of inferior vertical semicircular canal; h, membranous canal leading into aqueduct of the vestibule; k, vascular membrane covering the scala vestibuli; opposite this, at i, are seen the edges of the cartilaginous prisms in the fenestra rotunda; from the edges of these cartilages proceeds the delicate membrane closing the opening of the cochlea (not shown in the fi.)" Elliot Coues, 1884

The Inner Ear of an Eagle

"Membranous labyrinth of Haliaetus albicilla (White-tailed Eagle), X2. a,b, cochlea; b, its saccular…

"Haliaetus leucocephalus. White-headed Sea Eagle. "Bald Eagle." "Bird of Washington". Adult: Dark brown; quills black; head and tail white; bill, eyes, and feet yellow. Three years are required for the perfection of the white head tail of the "bald" eagle. The first year, the young are "black" eagle; very dark colored, with fleecy white bases of the feathers showing here and there; bill black; iris brown feet yellow. The next year, they are "gray" eagles, and usually larger than the old birds, the largest known specimens being of this kind." Elliot Coues, 1884

Bald Eagle

"Haliaetus leucocephalus. White-headed Sea Eagle. "Bald Eagle." "Bird of Washington". Adult: Dark brown;…

A man is gathering Murre's eggs from their nesting cliff. Birds lay single eggs and eggs are elongated and cone shaped.

Murre's Eggs

A man is gathering Murre's eggs from their nesting cliff. Birds lay single eggs and eggs are elongated…

"Somateri mollissima. Somateri dresseri. Common Eider. Bill gibbous at base of upper mandible; outline of culmen variously curved; with long, acute or clubbed, tumid process extending in line with culmen variously curved; with long, acute or clubbed tumid process extending in line with culmen on each side of forehead, divided by extension of feathers on culmen. feathers of side of bill advancing to about under nostrils, far beyond those on culmen. No speculum. Male no black marks on chin. (mollissima - Frontal processes short, narrow, acute, parallel. Smaller.). (dresseri - Frontal processes long, broad, clubbed, divergent. Larger.)." Elliot Coues, 1884

The Bill of an Eider

"Somateri mollissima. Somateri dresseri. Common Eider. Bill gibbous at base of upper mandible; outline…

"Somateria mollissima. European Eider Duck. Bill with lateral frontal process extending on each side of the forehead, between the short pointed extension of the feathers on the culmen and the much greater extension of those on the sides of the bill, which reach to below the nostril, about opposite those on the chin. The general upper outline of the bill nearly straight, and the frontal processes narrow, acute, and nearly parallel. Adult male: Plumage almost entirely black and white. Top of head glossy blue-black, including eyes, and forking behind to receive the white of the hind-head. Occiput more or less washed with sea-green. Neck all around, fore breast, most of the back, most of the wing-coverts above and below, the curly tertials, and sides of rump, white, on the breast tinged with pale creamy-brown." Elliot Coues, 1884

Eider Ducks

"Somateria mollissima. European Eider Duck. Bill with lateral frontal process extending on each side…

"Somateria fischeri. Spectacled Eider. Bill (in both sexes) peculiar in the extension upon it of dense velvety feathers which reach to a point on the culmen beyond the nostrils, thence sweeping past the nostrils obliquely downward and backward to the commissure, the nostrils opening just beneath the line of feathers. Feathers of chin extending in a point nearly as far as those on culmen. A peculiarly dense and puffy patch of velvety feathers about the eye, suggesting spectacles; frontal feathers erect, pious, in the male somewhat stiffened; occipital feathers lengthened into a crest; these characters of the head-feathering best marked in the male, but indicated also in the female. Nail of bill distinct. Adult male: General color grayish-black, the neck and most of the back white; lesser and median wing-coverts, the curved tertials, the lining of the wings and axillars, white; flanks white. On the head, the white of the neck gives way to rich sea-green, especially on the occipital crest; the frontal feathers are also tinged with greenish; but the 'spectacles' are pure silvery white, framed in black. Bill, in the dried state, dingy yellowish; feet the same, with dusky webs." Elliot Coues, 1884

Spectacled Eider

"Somateria fischeri. Spectacled Eider. Bill (in both sexes) peculiar in the extension upon it of dense…

"Falco mexicanus. American Lanner Falcon. Prairie Flacon. A medium-sized species, distinguished from any gyrfalcon by the smaller size, different feathering of the tarsus etc., from the duck hawk by the general much lighter color, which is dull brownish above instead of dark slate, etc. Adult: Upper parts brownish-drab, each feather with a paler border of brown, grayish, or whitish; the top of the head more uniform, the occiput and nape showing more whitish. Under parts white, everywhere excepting on the throat marked with firm spots of dark brown, most linear on the breast, then more broadly oval on the belly, enlarging and tending to merge into bars on the flanks, very sparse or obsolete on the crissum, on the maxiliary region forming a broad firm moustache; these marking corresponding with the ground color of the upper parts. Primaries ashy-brown, with narrow but firm pale edging of outer webs and ends, the inner webs regularly marked with white in form of barred indents or circumscribed spots, most numerous and regular on the outer primaries; the white tinged with fulvous, next to the shafts; the outer web of the first primary either plain, or with whitish indents as in F. lanarius; outer webs of secondaries more or less marked with fulvous; axillars plain dark brown; lining of wings otherwise white, spotted with dark brown. Tail pale brownish-gray, nearly uniform, but with white tip, and more or less distinct barring or indenting with whitish, especially on the lateral feathers, producing a pattern not unlike that of the primaries. Bill mostly dark bluish horn-color, but its base, and much of under mandible, yellow; feet yellow." Elliot Coues, 1884

Prairie Falcon Head

"Falco mexicanus. American Lanner Falcon. Prairie Flacon. A medium-sized species, distinguished from…

"Falcons. Bill furnished with a sharp tooth and notch near the end of the cutting edge of the upper mandible (sometimes two such teeth), and the end of under mandible truncated, with notch near the tip. Nostrils circular, high in the cere, with a prominent central tubercle. Inter-nasal septum extensively ossified. Palate with a median keel anteriorly. Superciliary shied prominent, in one large piece. Shoulder-joint strengthened by union of scapular process of the coracoid with the clavicle as in Micrastur, Herpetothers, and the Polyborinae alone of Flaconidae. Wings strong, long, and pointed, with rigid and usually straight and tapering flight-feathers; the tip formed by the 2d and 3d quills, supported nearly to their ends by the 1st and the 4th, both of which are longer then the 5th; only one or two outer primaries emarginate on inner webs near the end. Tail short and stiff, with more or less tapering rectrices. Feet strong, rather short, the tarsus of less length than the tibia, feathered more or less extensively, elsewhere irregularly reculate in small pattern varying with the genera or subgenera; never scutellate in single series before or behind. Middle toe very long; talons very short." Elliot Coues, 1884

Falcons

"Falcons. Bill furnished with a sharp tooth and notch near the end of the cutting edge of the upper…

"Falco mexicanus. American Lanner Falcon. Prairie Flacon. A medium-sized species, distinguished from any gyrfalcon by the smaller size, different feathering of the tarsus etc., from the duck hawk by the general much lighter color, which is dull brownish above instead of dark slate, etc. Adult: Upper parts brownish-drab, each feather with a paler border of brown, grayish, or whitish; the top of the head more uniform, the occiput and nape showing more whitish. Under parts white, everywhere excepting on the throat marked with firm spots of dark brown, most linear on the breast, then more broadly oval on the belly, enlarging and tending to merge into bars on the flanks, very sparse or obsolete on the crissum, on the maxiliary region forming a broad firm moustache; these marking corresponding with the ground color of the upper parts. Primaries ashy-brown, with narrow but firm pale edging of outer webs and ends, the inner webs regularly marked with white in form of barred indents or circumscribed spots, most numerous and regular on the outer primaries; the white tinged with fulvous, next to the shafts; the outer web of the first primary either plain, or with whitish indents as in F. lanarius; outer webs of secondaries more or less marked with fulvous; axillars plain dark brown; lining of wings otherwise white, spotted with dark brown. Tail pale brownish-gray, nearly uniform, but with white tip, and more or less distinct barring or indenting with whitish, especially on the lateral feathers, producing a pattern not unlike that of the primaries. Bill mostly dark bluish horn-color, but its base, and much of under mandible, yellow; feet yellow." Elliot Coues, 1884

Two Lanner Falcon

"Falco mexicanus. American Lanner Falcon. Prairie Flacon. A medium-sized species, distinguished from…

"Falco peregrinus. Peregrine Falcon. Duck Hawk. Great-footed Hawk. A medium-sized falcon, about as large as the foregoing, but known at a glance from any bird of N. Am. by the slaty-plumbeous or dark bluish-ash of the upper parts, the black "moustache," and other marks, taken with its particular size and shape. Wings stiff, long, thin, pointed by the 2d quill, supported nearly to its tip by 1st and 3d; 1st quill alone abruptly emarginate on inner web, this about 2 inches from its tip; none cut on outer webs. Tomium of upper mandible strongly toothed, of under mandible deeply notched. Tarsus feathered but a little way down in front, otherwise entirely reticulate; toes very long, giving great grasp to the talons. Adult: Above rich dark bluish-ash or slate-color, very variable, sometimes quite slaty-blackish, again much lighter bluish-slate; the tint pretty uniform, whatever it may be, over all the upper parts, but all the feathers with somewhat paler edges, and the larger ones for the most part obscurely barred with lighter and darker hues. Under parts at large varying from nearly pure white to a peculiar muddy buff color of different degrees of intensity; the throat and breast usually free from markings (or only with a few sharp shaft pencillings), and this white or light color mounting on the auriculars, so that it partly isolates a blackish moustache from the blackish of the side of the head; the under parts, except as said, and including the under wing- and tail-coverts closely and regularly barred, or less closely and more irregularly spotted, with blackish; the bars best pronounced on the flanks, tibiae, and crissum, other parts tending to spotting, which may extend forward to invade the breast (this is the rule in European birds, the exception, though not a rare one, in American birds). Tail and its upper coverts regularly and closely barred with blackish and ashy-gray, the interspacing best marked on the inner webs, and all the feathers narrowly tipped with white or whitish." Elliot Coues, 1884

Two Peregrine Falcons

"Falco peregrinus. Peregrine Falcon. Duck Hawk. Great-footed Hawk. A medium-sized falcon, about as large…

"Falco peregrinus. Peregrine Falcon. Duck Hawk. Great-footed Hawk. A medium-sized falcon, about as large as the foregoing, but known at a glance from any bird of N. Am. by the slaty-plumbeous or dark bluish-ash of the upper parts, the black "moustache," and other marks, taken with its particular size and shape. Wings stiff, long, thin, pointed by the 2d quill, supported nearly to its tip by 1st and 3d; 1st quill alone abruptly emarginate on inner web, this about 2 inches from its tip; none cut on outer webs. Tomium of upper mandible strongly toothed, of under mandible deeply notched. Tarsus feathered but a little way down in front, otherwise entirely reticulate; toes very long, giving great grasp to the talons. Adult: Above rich dark bluish-ash or slate-color, very variable, sometimes quite slaty-blackish, again much lighter bluish-slate; the tint pretty uniform, whatever it may be, over all the upper parts, but all the feathers with somewhat paler edges, and the larger ones for the most part obscurely barred with lighter and darker hues. Under parts at large varying from nearly pure white to a peculiar muddy buff color of different degrees of intensity; the throat and breast usually free from markings (or only with a few sharp shaft pencillings), and this white or light color mounting on the auriculars, so that it partly isolates a blackish moustache from the blackish of the side of the head; the under parts, except as said, and including the under wing- and tail-coverts closely and regularly barred, or less closely and more irregularly spotted, with blackish; the bars best pronounced on the flanks, tibiae, and crissum, other parts tending to spotting, which may extend forward to invade the breast (this is the rule in European birds, the exception, though not a rare one, in American birds). Tail and its upper coverts regularly and closely barred with blackish and ashy-gray, the interspacing best marked on the inner webs, and all the feathers narrowly tipped with white or whitish." Elliot Coues, 1884

Peregrine Falcon Small

"Falco peregrinus. Peregrine Falcon. Duck Hawk. Great-footed Hawk. A medium-sized falcon, about as large…

"Carpodacus. Purple Bullfinch. Bill smaller and less turgid than in Pinicol or Pyrrhula, more regularly conic and more acute; sides convex in all directions, but with distinct ridge prolonged in a point on forehead where not concealed by the antiae, its outline moderately curved; commissure decidedly angulated, about straight before and behind the bend; gonys quite straight. Nasal ruff little developed, barely cocealing the slight nasal fossae, thence falling over sides of bill, but discontinuous across culmen." Elliot Coues, 1884

The Bill of a Purple Finch

"Carpodacus. Purple Bullfinch. Bill smaller and less turgid than in Pinicol or Pyrrhula, more regularly…

"Leucosticte griseinucha. Brandt's Rosy Finch. Like the littoral variety of tephrocotis, in having the ashy extending over the sides of the head; this color settled in a definite hood, said to never invade the chin. The resident form of the N.W. coast and islands, from Kadiak W. and N." Elliot Coues, 1884

Brandt's Rosy Finch

"Leucosticte griseinucha. Brandt's Rosy Finch. Like the littoral variety of tephrocotis, in having the…

"Carpodacus purpureus. Purple Finch (better Crimson Finch). Rose-red, paler below, insensibly whitening on belly and crissum, brightest anteriorly, intensified to crimson on crown, darker and more brownish-red on back, where also streaked with brown. Wings and tail dusky, the quills edged and coverts tipped with browninsh-red. Lores and feathers about base of bill hoary-whitish. Bill and feet brown, the under mandible rather paler." Elliot Coues, 1884

Purple Finch

"Carpodacus purpureus. Purple Finch (better Crimson Finch). Rose-red, paler below, insensibly whitening…

"Ammodramus maritimus. Seaside Finch. Olive-gray, obscurely streaked on back and crown with darker and paler; below, whitish, often washed with brownish, shaded on sides with color of back, and with ill-defined dark streaks on breast and sides; maxillary stripes on the same; wings and tail plain dusky, with slight olivaceous edgings; wing-coverts and inner quills somewhat margined with brown; edge of wing bright yellow; a bright yellow spot on lore, and often often some vague brownish and dusky markings on side of head; bill plumbeous, or dark horn-blue; feet dark." Elliot Coues, 1884

Seaside Finch

"Ammodramus maritimus. Seaside Finch. Olive-gray, obscurely streaked on back and crown with darker and…

"Leucosticte tephrocotis. Swainson's Rosy Finch. Gray-crowned Rosy Finch. Sexes similar. Adult in breeding plumage or nearly so: Bill and feet black. Nasal plumules white. Frontlet black; rest of pileum hoary-ash, not descending below level of eyes and upper border of auriculars (for when the ash invades the sides of head to any extent, the bird takes the first step toward litoralis, in which the head is extensively hooded in ash). General color, sides of head included, chocolate or liver-brown of varying intensity, many feathers skirted with gray or whitish, especially the interscapulars, which also have dusky centres, and inclining to blackish on chin and throat. Hinder parts of the body above and below, including tail-coverts, rich rosy or carmine red, this color due to broad edgings of the dusky feathers of these parts. Wings and tail blackish, the wing-coverts and primaries edged with rosy, showing nearly continuous in the closed wing; edgings of inner secondaries rosy-white or white." Elliot Coues, 1884

Swainson's Rosy Finch

"Leucosticte tephrocotis. Swainson's Rosy Finch. Gray-crowned Rosy Finch. Sexes similar. Adult in breeding…

"Phoinikopteros ruber. American Red Flamingo. Adult: Plumage scarlet, the primaries and most of the secondaries black. Legs lake-red. Bill black on the terminal part, orange in the middle, the base and bare skin of head yellow." Elliot Coues, 1884

American Flamingo

"Phoinikopteros ruber. American Red Flamingo. Adult: Plumage scarlet, the primaries and most of the…

"Colaptes auratus. Golden-winged Woodpecker. Pigeon Woodpecker. Flicker. Yucker. High-holder. Back and exposed surfaces of wing-coverts and secondaries olive-brown with numerous black bars. Rump snowy-white; upper tail-coverts white, mixed with black. Primaries blackish, with golden shafts, and glossed with golden underneath, at their bases paler and more tawny yellow. Tail-feathers above black, their shafts and under surfaces golden, blackened at ends, the outermost with a few touches of yellow or white. Top of head, with back and sides of neck, ash, with a scarlet nuchel band (in both sexes). Sides of head, whole chin, throat, and fore-breast lilac-brown, with broad black cheek patches, these 'moustaches' wanting usually in the female. A broad black pectoral semi-lune. Other under parts shading from a lighter shade of the color of the breast into creamy-yellow, marked with numerous circular black spots. Bill and feet dark plumbeous. Iris brown." Elliot Coues, 1884

Flicker

"Colaptes auratus. Golden-winged Woodpecker. Pigeon Woodpecker. Flicker. Yucker. High-holder. Back and…

"Myiarchus cinerescens. Ash-throated Crested Flycatcher. Rather olivaceous-brown above, quite brown on the head; throat very pale ash, sometimes almost whitish, changing gradually to very pale yellow or yellowish-white on the rest of the under parts. Primaries edged as in crinitus, but secondares and coverts edged with grayish-white. Tail-feathers as in crinitus, but the rufous of the inner webs hardly or not reaching their ends, being cut off from the tip by widening of the fuscous stripe (in young birds, in which the quills and tail-feathers are more extensively rufous-edged, the last distinction does not hold)Elliot Coues, 1884

Ash-throated Flycatcher

"Myiarchus cinerescens. Ash-throated Crested Flycatcher. Rather olivaceous-brown above, quite brown…

"Pitangus derbianus. Derby Flycatcher. Under parts light wood-brown, with an olive tinge; wings and tail the same, but the feathers extensively bordered without and within with chestnut, forming a conspicuous continuous area on the wing-quills in the closed wing, and on most of the wing and tail-feathers more extensively than the brown portion of the inner webs. Below from the breast, including lining of wings, clear and continuous lemon-yellow. Whole chin and throat pure white, widening behind up under ear-coverts. Top and sides of head black, a circle of white from forehead over eyes to nape white, the enclosed black enclosing black a lemon and orange patch. Or, middle of crown yellow and orange, enclosed and partly concealed in black, this black enclosed in white, then the long and broad black bar on side of head, separating the white of side of crown from that of side of throat. The coronal feathers lengthened and erectile as in a king-bird, or more so; crown-patch of same character but more extensive. Bill and feet black; iris hazel Sexes alike." Elliot Coues, 1884

Derby Flycatcher

"Pitangus derbianus. Derby Flycatcher. Under parts light wood-brown, with an olive tinge; wings and…

"Myiarchus crinitus. Great Crested Flycatcher. Decidedly olivaceous above, a little browner on head, where the feathers have dark centres; throat and fore pure dark ash; rest of under parts bright yellow, the two colors meeting abruptly; primaries margined on both edges with chestnut; secondaries and coverts edges and tipped with yellowish-white; tail with all the feathers but the central pair chestnut on the whole of the inner web (excepting perhaps a very narrow space next the shaft); outer web of outer feathers with yellowish; middle feathers, outer webs of the rest, and wings except as stated, dusky-brown. The foregoing phrases are intended to be chiefly antithetical to those used in describing cinerescens, below, No. 375. Other diagnostic points are: bill dark but not quite black, pale at base below; stout and comparatively short, hardly or not as long as tarsus, the latter perhaps never .90, the olive back, ash throat, and yellow belly severally pure in color; all tail-feathers but middle pair so extensively rufous on inner webs that a mere line, if any, of fuscous persists next the shaft (compare erythrocercus and cooperi), and this fuscous line,if any, running of same narrowness to ends of the feathers (compare cinerescens); never more than a trace of rufous on outer webs." Elliot Coues, 1884

Great Crested Flycatcher

"Myiarchus crinitus. Great Crested Flycatcher. Decidedly olivaceous above, a little browner on head,…

"Sayiornis fusca. Pewit Flycatcher. Water Pewee. Pewit. Phaebe. Dull olivaceous-brown, the head much darker fuscous-brown, almost blackish, usually in marked contrast with the back; below, solid whitish, or palest possible yellow, particularly on the belly; the sides, and the breast nearly or quite across, shaded with grayish -brown; wings and tail dusky, the outer tail-feather, inner secondaries, and usually the wing-coverts, edged with whitish; a whitish ring round the eye; bill and feet black. Varies greatly in shade; the foregoing is the average spring condition. As summer passes, the plumage becomes much-duller and and darker brown, from wearing of the feather; then, after the moult, fall specimens are much brighter than in spring, the under parts being decidedly yellow, at least on the belly." Elliot Coues, 1884

Pewit Flycatcher

"Sayiornis fusca. Pewit Flycatcher. Water Pewee. Pewit. Phaebe. Dull olivaceous-brown, the head much…

"Milvulus forficatus. Swallow-tailed Flycatcher. Scissor-tail. Crown patch orange or scarlet. General color hoary-ash, paler or white below; sides at insertion of wings scarlet or bloody-red, and other parts of the body variously tinged with the same, or a paler salmon-red. Wings blackish, with whitish edgings. Tail black, but several of the long feathers extensively white or rosy; these are narrow and linear, sometimes widening somewhat in spoon-shape." Elliot Coues, 1884

Swallow-tailed Flycatcher

"Milvulus forficatus. Swallow-tailed Flycatcher. Scissor-tail. Crown patch orange or scarlet. General…

"Pyrocephalus rubineus mexicanus. Vermilion Flycatcher, Adult male: Pure dark brown, including stripe along side of head; wings and tail blackish with slight pale black. Female: Dull brown, including the little-crown; below, white, tinged with red, reddish or orange in some places; the breast and sides with slight dusky streaks." Elliot Coues, 1884

Vermilion Flycatcher

"Pyrocephalus rubineus mexicanus. Vermilion Flycatcher, Adult male: Pure dark brown, including stripe…

"Sturnella magna. Field Lark. Old-field Lark. Meadow Lark. The colors, as above described, rich and pure, the prevailing aspect brown; black streaks prevailing on brown; yellow of chin usually confined between rami of under mandible; black bars on wings and tail usually confluent along the shaft of the feathers, leaving the gray in scallops. Sexes are similar: Female duller colored, the yellow paler. " Elliot Coues, 1884

Meadow Lark Foot and Bill

"Sturnella magna. Field Lark. Old-field Lark. Meadow Lark. The colors, as above described, rich and…

"Quiscalus. Grackle. The feet are large and strong, and the birds spend much of their time on the ground, where they walk or run instead of advancing by leaps." Elliot Coues, 1884

Grackle Foot

"Quiscalus. Grackle. The feet are large and strong, and the birds spend much of their time on the ground,…