188 



KEY TO THK BIRDS OF EASTERN NORTH AMERICA. 



FAMILY CUCULID^. 



Cuckoos. 

 Feet, zygodactyle (two toes in front, two behind). 



Under mandible, yelFow ; greater portion of primaries, rufous brown, tipped 



with grayish olive; uiiilerpui-ts, dull white; outer tail feathers, black, tipped 

 with white. 



Yellow-billed Cuckoo. 



Cocnjzns nmericanns. 

 See No. 320. 



Under mandible, yellow, tip, black; primaries, grayish olive, not rufous 



browu; belly, tingeil with pale rufous. 



nangrove Cuckoo. 



Coccyzus minor, and races. 

 See No. 318. 



Bill, black; no rufous brown on primaries; underparts, dull white; outer tall, 

 like back in color. 



Black'billed Cuckoo. 



Coccijzus erythrophthalmiis. 

 See No. 321. 



General plumage, black ; bill, black. West Indian species, recorded from Florida ; 

 accidental in tlie United States. Bill very diftereut from that of true Cuckoo, 

 being thin and " Parrot like." Ani. 



Orotophaga ani. 

 See No. 317. 



