Birds of America
By John James Audubon, F. R. SS. L. & E.
GENUS IV.--SPIZA, Bonap. PAINTED-BUNTING.
Bill short, moderately stout, conical, acute; upper mandible rather
narrower, with the dorsal line somewhat convex, the ridge narrow, the sides
sloping and a little convex, the edges inclining upwards for a third of their
length, then direct, with a slight notch close to the narrow declinate tip;
lower mandible with the angle short and rounded, the dorsal line very slightly
convex, the sides rounded, the edges involute, the tip acute. Nostrils basal,
roundish, partly concealed by the feathers. Head broadly ovate; neck short;
body rather full. Feet of moderate length; tarsus much compressed, with seven
scutella; toes of moderate size, hind toe large, lateral equal. Claws slender,
compressed, well arched, acute. Plumage full, soft, and blended. Wings of
moderate length, the second and third quills longest, the first about equal to
the fourth. Tail of moderate length, emarginate. Palate anteriorly with their
narrow ridges, forming a large oblong hard knob at their base; tongue higher
than broad, deeply grooved above, pointed; oesophagus dilated into a crop;
stomach elliptical, muscular; intestine of moderate length; coeca very small.