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BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



ish or whitish tip; iris and feet dark brown; naked skin of head and 

 upper neck blackish, the bare area extending farther down in front 

 than behind. 



Immature. — Not obviously different from adults, but with no irides- 

 cence on the wings, and the feathering extending farther up on the 

 head, the naked skin of the head and neck more or less densely covered 



Figure 2. — Coragyps atratus. 



with small hairlike or bristly feathers, the skin of the neck not corru- 

 gated as in adults, and bill without the light tip, wholly dusky. 



Natal down. — Covered, except on the head, with long, thick, rich, 

 buffy down. 



Adults (sexes alike).— Wing 381-454.5 (426.2); tail 153-216 (181.1); 

 exposed culmen from front of forehead 50.8-61 (55.9), culmen from 



