58 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



FAMILY FREQATID^E. 

 Man-of-war Birds. Frigate Birds. 



Bill, hooked at tip; lores, feathered; upper plumage, entirely black; 

 toes, four, all connected by webs ; tail, forked ; wings, very long. 



* Group 1. Wing, over 21 inches long. 



Entire plumage, black (adult, male) ; general plumage, black ; belly, white (female) ; head 

 and neck, whitish; belly, white; rest of plumage, black (immature). 



Fregata aquila. Man-of-war Bird. 

 See No. 85. 



* For directions for measurement, see page 9. 



