Birds of America
By John James Audubon, F. R. SS. L. & E.
GENUS II.--ANSER, Briss. GOOSE.
Bill shorter than the head, rather higher than broad at the base, somewhat
conical, depressed toward the end, rounded at the tip; upper mandible with the
dorsal line sloping, the ridge broad and flattened, the sides sloping, the edges
soft and obtuse, internally with numerous oblique marginal lamellae, the unguis
obovate, convex; nasal groove oblong, filled by the soft membrane of the bill;
nostrils medial, lateral, longitudinal, narrow elliptical, open, pervious, lower
mandible straight, with the angle very long, narrow, and rounded, the edges soft
and obtuse, with numerous oblique lamellae, the tip broadly convex. Head small,
oblong, compressed; neck long and slender; body very full, slightly depressed.
Feet short, stout; tibia bare for a short space below; tarsus short, a little
compressed, covered all round with angular scales; hind toe very small and
elevated, third toe longest, fourth longer than second; all reticulated at the
base, scutellate toward the end, the anterior webbed. Claws small, arched,
rather compressed. Plumage close, compact above, blended beneath. Wings long,
convex, the second quill longest, the first and third nearly equal. Tail very
short, of sixteen or more feathers.