158 



KEY TO THE BIHDS OF EASTERN NORTH AMERICA. 



Group 3. Wing, over 7.50 inches long. 



Tail, pointed .-iikI rather long; under tail coverts, white. 



Tail, square; under tail coverts, gray or hluish gray. 



Passenger Pigeon. 



Ect.opistes mlyratoriits. 

 See \o. 251. 



White-crowned Pigeon. 



Col ti mint !('itciict'ph(ih(. 

 See No. 250. 



FAMILY CATHARTID/E. 

 American Vultures. 



Plumage, black or dark brown ; hind toe, short ; claws, not sharp ; 

 head, bare in adult. 



Group 1. Wing from 14 to 21 inches long. 

 Section 1. Wing, less than 17 inches long. 



Head and foreueck, bare; skin of head, l)lackish; general plumage, black; 

 primaries, hoary wliite beneatli. 



Black Vulture. 



Carrion Crow. 



Cnthariitta iinihii. 



See No. 260. 



(•apvMRBm 



