. Bulletin - United States National Museum. Science. BIRDS OF NORTH AND MIDDLE AMERICA 13 Immature.—Entire iipperparts, including wings and tail and even the bare skin of tlie head, fuscous to fuscous-black, the individual feathers of the back, the upper wing coverts and upper tail coverts vaguely margined with fuscous-brown, the outer primaries externally narrowly edged with whitish; breast abdomen, sides, flanks, and under tail coverts white; under wing coverts mixed white and fuscous, axillars Figure —Sarcoramphus papa. Bill whitish horn color, lighter distally; feet (in dried sk
. Bulletin - United States National Museum. Science. BIRDS OF NORTH AND MIDDLE AMERICA 13 Immature.—Entire iipperparts, including wings and tail and even the bare skin of tlie head, fuscous to fuscous-black, the individual feathers of the back, the upper wing coverts and upper tail coverts vaguely margined with fuscous-brown, the outer primaries externally narrowly edged with whitish; breast abdomen, sides, flanks, and under tail coverts white; under wing coverts mixed white and fuscous, axillars Figure —Sarcoramphus papa. Bill whitish horn color, lighter distally; feet (in dried skins) dark earth brown. Juvenal.—Similar to immature, but with the enthe underparts dark fuscous like the upperparts; some specimens with a slight mixture of whitish on the abdomen (probably early stages of molt into imma- ture plumage); bill and feet (as far as may be judged from dried skins) as in immature. Downy young.—None seen; no descriptions found except a figure (Proc. Zool. Soc. London, 1894, 163) which suggests white or whitish down everywhere but on the bare head and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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