Birds of America
By John James Audubon, F. R. SS. L. & E.
GENUS V.--URIA, Lath. GUILLEMOT.
Bill generally shorter than the head, stout, compressed, tapering, acute;
upper mandible with the dorsal line slightly arched; the ridge narrow, broader
at the base, the sides sloping, the edges sharp and inflected, the tip a little
decurved, with a slight notch; nasal groove broad, feathered; nostrils at its
lower edge, sub-basal, lateral, longitudinal, linear; lower mandible with the
angle rather long, narrow, the dorsal line ascending and straight, the back very
narrow, the sides nearly flat, the edges sharp and inflected, the tip acute.
Head large, oblong; neck short and thick; body stout, elongated, rather
depressed. Feet short, placed far behind; the greater part of the tibia
concealed, its lower part bare; tarsus short, stout, compressed, anteriorly
scutellate; toes three, of moderate length, middle toe longest, outer little
shorter, scutellate, connected by entire webs. Claws small, slightly arched,
compressed, rather acute. Plumage dense, very soft, blended. Wings rather
short, narrow, acute; primary quills curved, tapering, the first and second
longest; secondaries short, rounded. Tail very short, rounded, of twelve or