ClipArt ETC
"Circinae. Harriers. Face surrounded with an incomplete ruff (as in most owls); orifice of ear about as large as the eye, and in some cases at least with a decided conch (in this picture). Bill rather weak, not toothed or notched. Bill thickly beset with many curved radiating bristles surpassing in length the cere, which is large and tumid; tomia lobed or festooned, but neither toothed nor notched. Nostrils ovate-oblong, nearly horizontal. Superciliary shield prominent. Tarsus long and slender, scutellate before and mostly so behind, reticulate laterally; toes slender, the middle with its claw much shorter than the tarsus; a basal web between the outer and middle; all tuberculate underneath; Claws very large and sharp, much curved. Wings very long and ample; 3d and 4th quills longest; 1st shorter than 6th; outer 3-5 (in our species 4) emarginate on inner webs; 2d-5th emarginate on outer webs. Tail very long, about 2/3rds as long as the wing, nearly even or rounded, the folded wings falling short of its end. " Elliot, Coues, 1884

Harrier Ear Parts

"Circinae. Harriers. Face surrounded with an incomplete ruff (as in most owls); orifice of ear about…