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Genus XII.--Corythus, Cuv. Pine-Finch.


Genus XII.--Corythus, Cuv. Pine-Finch.


The definitive website on wildbirds & nature



Birds of America

By John James Audubon, F. R. SS. L. & E.

VOLUME III.

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GENUS XII.--CORYTHUS, Cuv. PINE-FINCH.

Bill short, robust, bulging at the base, conical, acute; upper mandible of the same breadth as the lower, with its dorsal line very convex, the nasal sinus semicircular, the sides convex, the edges sharp, overlapping, gently ascending at the base, then arched, with a slight festoon, the notches obsolete, the tip declinate, acute; lower mandible with the angle semicircular, the dorsal line slightly convex, the back rounded at the base, the sides convex, the edges somewhat inflected, the tip obtuse. Nostrils basal, round, concealed by bristly feathers. Head large, roundish-ovate; neck short; body moderately stout; feet short; tarsus short, compressed, with seven scutella; toes stout, the first proportionally large, the lateral nearly equal, the outer adherent at the base. Claws long, moderately arched, compressed, acute, that of the third toe longer than that of the first. Plumage soft, full, rather blended; two tufts of bristly feathers at the base of the upper mandible directed forwards. Wings of moderate length, pointed, the first, second, and third, nearly equal. Tail rather long, deeply emarginate. Roof of the mouth concave, with five prominent ridges; tongue deeper than broad, in its distal half oblong, concave, obtuse, and horny; oesophagus dilated about the middle; stomach large, muscular, with the lateral muscles distinct, and the epithelium rugous, intestine long, and rather slender; coeca very small; cloaca oblong.




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