188 



KEY TO THK BIRDS OF EASTERN NORTH AMERICA. 



FAMILY CUCULID/E. 



Cuckoos. 



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



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

 with grayish olive; underparts, dull white; outer tail feathers, black, tipped 

 with white. 



Yellow=billed Cuckoo. 



Coccyzus americanus. 

 See No. 320. 



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

 browu ; belly, tinged with pale rufous. 



flangrove Cuckoo. 



Coccyzus minor, and races. 

 See No. 318. 



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

 like back in color. 



Black-billed Cuckoo. 



Coccyzus erythrophthalmus. 

 See No. 321. 



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

 accidental in the United States. Bill very different from that of true Cuckoo, 

 being thin and " Parrot like." Ani. 



Crotophaga ani. 

 See No. 317. 



