Flies in the family Syrphidae are commonly known as hoverflies, flower flies, or syrphid flies.As their…
"Stilt. Long-shanks. Lawyer. Adult. Mantle, constituted by the interscapulars, scapulars, and wings…
"Steganopus wilsoni. Wilson's Phalarope. Bill and feet black. Crown of head pale ash, passing into white…
"Gallinago wilsoni. American Snipe. Wilson's Snipe. "English" Snipe. Jack-Snipe. Crown black, with a…
"Gallinago wilsoni. American Snipe. Wilson's Snipe. "English" Snipe. Jack-Snipe. Crown black, with a…
"Gallinago wilsoni. American Snipe. Wilson's Snipe. "English" Snipe. Jack-Snipe. Crown black, with a…
"Macrorhamphus griseus. Red-breasted Snipe. Gray Snipe. Brown-back. Dowitcher. In summer:Under parts…
"Micropalama himantopus. Stilt Sandpiper. In summer: blackish, each feather edged and tipped with white…
"The post-oral arches of the house martin, at middle of period of incubation, lateral view, X14 diameters.…
"Skull of chick, second stage, in profile, brain and membranes removed to show cartilaginous formations,…
"Calidris arenaria. Sanderling. Ruddy "Plover". Adult in summer: Entire upper parts and neck all round…
"Eurynorhynchus pygmaeus. Spoon-billed Sandpiper. General appearance of a stint, and size little greater.…
"Limosa fedoa. Great Marbled Godwit. Marlin. Feathers not extending on side of lower mandible to a point…
"Symphemia semipalmata. Semipalmated Tattler. Willet. Adult in summer: Upper parts ashy, confoundedly…
"Symphemia semipalmata. Semipalmated Tattler. Willet. Adult in summer: Upper parts ashy, confoundedly…
"Totanus melanoleucus. Greater Tell-tale. Greater Yellow-shanks. Long-legged Tattler. Stone-snipe. Bill…
"Tringoides macularius. Spotted Sandpiper. Above, silken ashen-olive (quaker-color- as in our cuckoos)…
"Machetes pugnax. Ruff. Reeve. Combatant. Gambetta. Varied above with black, brown, buff and chestnut,…
"Tryngites rufescens. Buff-breasted Sandpiper. Above, brownish-black with a greenish gloss, every feather…
"Numenius longirostris. Long-billed Curlew. Sickle-bill. Plumage very similar to that of the Godwit,…
"Numenius hudsonicus. Hudsonian Curlew Jack Curlew. General tone of coloration scarcely rufous, the…
"Ardea herodias. Great Blue Heron. Of large size, and varied dark colors, not dichromatic. Back without…
"Nyctiardea grisea naevia. Black-crowned Night Heron. Qua-bird. Squawk. Crown, scapulars and interscapulars…
"Botaurus. Bittern. Bill moderately longer than head, shorter than tarsus, which is shorter than middle…
"Botaurus mugitans. American Bittern. Indian Hen. Stake-driver. Bog-Bull. Plumage of the upper parts…
"Anus boscas. Mallard. Wild or Domestic Duck. Green-head. Bill greenish-yellow. Feet orange-red. Iris…
"Anus boscas. Mallard. Wild or Domestic Duck. Green-head. Bill greenish-yellow. Feet orange-red. Iris…
"Bernicla nigricans. Black Brant. Bill, feet, and claws black; iris brown. Head and neck all around,…
"Bernicla nigricans. Black Brant. Bill, feet, and claws black; iris brown. Head and neck all around,…
"Bernicla brenta. Brant Goose. Bill, feet, and claws black; iris brown. Head and neck all around, and…
"Bernicla canadensis. Canada Goose. Common Wild Goose. Tail normally 18-feathered. Bill, feet, head,…
"Dafila. Pin-tail Ducks. Tail (in adult male) narrow, cuneate, when fully developed nearly as long as…
"Dafila acuta. Pin-tail Duck. Sprig-tail. Bill black, with grayish-blue edge of upper mandible; feet…
"Querquedula (N.) carolinensis. American Green-winged Teal. Bill black; feet bluish-gray: iris brown.…
"Aix sponsa. Wood Duck. Summer Duck. "The Bride." Adult Male: Bill pinkish-white, with lake-red base,…
"Fuligula ferina americana. Red-head. American Pochard. The feathers of the head somewhat full and puffy,…
"Fuligula ferina americana. Red-head. American Pochard. The feathers of the head somewhat full and puffy,…
"Fuligula ferina americana. Red-head. American Pochard. The feathers of the head somewhat full and puffy,…
"Clangula albeola. Buffle-head. Butter-ball. spirit-duck. Dipper. Bill with nostrils rather behind than…
"Camptolaemus labradorius. Labrador Duck. Pied Duck. Adult male: Bill black with orange at base and…
"Somateri mollissima. Somateri dresseri. Common Eider. Bill gibbous at base of upper mandible; outline…
"Mergus merganser. Merganser. Goosander. Nostrils near middle of bill. Frontal feathers extending acutely…
"Mergus serrator. Red-breasted Merganser. Nostrils near base of bill. Frontal feathers extending obtusely…
"Phalacrocorax bicristatus. Cormorant. The knee-joint of a Cormorants. F, femur; P, patella; T, tibia;…
"Larus heermanni. White-headed Gull. Bill shorter than head or tarsus, rather slender, moderately compressed,…
"Chroicocephalus atricilla. Laughing Gull. Black-headed Gull. Bill longer than middle toe and claw,…
"Sterna dougalli. Roseate Tern. Paradise Tern. Bill about as long as head or foot, straight, slender,…
"Sterna (T.) elegans. Elegant Tern. Princely Tern. Bill bright red, salmon-colored toward tip. Feet…
"Sterna aleutica. Aleutian Tern. Bill of ordinary shape, as in hirundo, macrura, etc., entirely black.…
"Sterna fuliginosa. Sooty Tern. feet stout; toes short; with much incised webs; tibia bare .70; tarsus…
"Sterna anaisthetikos. Bridled Tern. The foot of a Bridled Tern; Tarsus .85; middle toe the same, with…
'Rhynchops. Skimmer. Bill hypognathous Among the singular bills of birds that frequently excite our…
"Ripe chick's skull, longitudinal section, vied inside, x 3 diameters; after parker. In the mandible…
"Side view of a woodpecker's skull, showing the long slender basihyal (bh), bearing slight elements…
"Top view of skull of Cloaptes, (flickers) showing thyrohyals running along the skull and into right…
"Cymochorea leucorrhoa. Leach's Petrel. White-rumped Petrel. Coloration as in the last species (pygmy…
"Cymochorea melaena. Black Petrel. Form of the last very nearly; bill more robust; tarsus a little longer…
"Puffinus opisthomelas. Black-vented Shearwater. Dark color of upper parts extending farther on sides…
"Colymbus torquatus. Common Loon. Great Northern Diver. Adult: Bill black, the tip and cutting edges…