Cere

Definition and stakes

Portrait of John James Audubon John James Audubon,  Ornithological biography, Vol. 4… (1835)

“ Bill black; the cere and soft basal margins yellow. Iris bright red. Tarsi and toes yellow, of a darker tint than the cere; claws black. All the lower parts are pure white, with the exception of a patch on five or six of the larger wing-coverts; the forehead is also white, as are the cheeks; the superciliary bristles black, the white of 370 the head gradually blends into the general colour of the upper parts, which is ash-grey; the smaller wing-coverts bluish-black; the shafts of the quills brownish-black; all the feathers of the tail, excepting the two middle, white ”
Source: Gutenberg

Portrait of John James Audubon John James Audubon,  Ornithological biography, Vol. 4… (1835)

“ Bill short, broader than deep at the base, with the gape very wide. Upper mandible with the cere covered at the base with bristly feathers, the dorsal line convex and declinate to the end of the cere, then curved downwards in about the third of a circle, the sides at the base sloping towards the end convex and erect, the sharp edges with a distinct festoon, the tip narrow and acute. Lower mandible with the angle very wide and long, the dorsal outline very short, ascending and slightly convex, the sharp edges inflected, the tip obliquely truncate and narrow. ”
Source: Gutenberg

Richard C. McGregor,  A Manual of Philippine Birds

“ This species is an inhabitant of deep forest and is seldom seen.
Genus PITHECOPHAGA Grant, 1896.
Bill deep, greatly compressed, depth of upper mandible twice its width at edge of cere; culmen greatly curved for its entire length; nostril in a vertical slit near margin of cere; a very full crest of long feathers; wings rounded, rather short; inner webs of primaries slightly narrowed from middle to tip; tarsus slightly feathered in front at base; a row of transverse plates in front, sides and back with small hexagonal scales; feet powerful; tail-feathers wide and slightly graduated.
”
Source: Gutenberg

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