AVES CATHARTID/E. 



543 



Back : Back, rump and upper tail-coverts dull uniform black. 



Tail : Square in shape ; a very marked character always conspicuous. 

 Dull black above ; somewhat paler from below ; shafts of rectrices black 

 above and white almost to the tips below. 



Wings : Primaries dull black, the shafts white both above and below, 

 and the under surfaces hoary or white ; the rest of the feathers of the wing 

 dull uniform black. 



Fig. 271. 



Coragyps urubu. P. U. O. C. 5249. Detail of foot; one-half life size. 



Lower parts : Dull uniform black throughout. 

 Bill : Dusky ; the tip yellowish or white. 

 Feet: Dull blackish lead-color. 

 Iris : Deep hazel-brown. 



The adult female is like the male in appearance, averaging a little 

 smaller in size. 



Immature birds and young of the year fully feathered do not differ mark- 



