54 



KEY TO THE BIRDS OV EASTERN NORTH AMERICA. 



FAMILY PHALACROCORACID^. 



Cormorants. 



Bill, hooked at tip, and less than twelve inches long; 

 *^*^ bare skin at base of bill and chin ; lores, bare ; toes, four, 

 all connected by webs. 



Group 1. Wing, 11 to 15 inches long. 



Tail eoinjxjsed of foui-te(^n I'eatliei's. 



Phalae.ror.nraxcarbo. Common Cormorant. Shag. 



See No. 79. 



Tail composeil of twelve feathers. 



Pltalfirrnrnrar. diJopIius, mid rnci'si. Double-crested Cormorant and Florida Cormorant. 



See Nos. SO and 81 



The Mexican ( 'orniorant, a 9mall(;r species, occasionallj- occurs in the Mississipj)! Valley. 



^ For directions .for ineayurcnient, see page 9. 



