Birds of America
By John James Audubon, F. R. SS. L. & E.
GENUS IV.--HALIAETUS, Savigny. SEA-EAGLE.
Bill rather short, very deep, compressed; upper mandible with the dorsal
outline nearly straight at the base, beyond the cere decurved, the sides
sloping, the edges nearly straight, with a slight obtuse process, and a shallow
sinus close to the strong trigonal tip; lower mandible with the dorsal outline
slightly convex, the tip obliquely truncate. Head large, oblong, flattened
above. Nostrils oblong, oblique near the ridge. Neck of moderate length. Body
very large. Feet rather short, very robust; tarsi roundish, covered anteriorly
with transverse scutella, posteriorly with large, laterally with small scales;
toes robust, free, scutellate above; claws large, curved, rounded, flat beneath,
acuminate. Plumage compact, imbricated; feathers of the head and neck narrow
and pointed; space between the bill and eye barish, being sparsely covered with
bristle-like feathers, disposed in a radiating manner. Wings long, the second
and third quills longest, the outer five cut out abruptly on the inner web.
Tail rather long, rounded. Duodenum convoluted.