54 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



FAMILY PHALACROCORACIO4E. 



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. 



Taif composed of fourteen feathers. 



Phalacrocoraxcarbo. Common Cormorant. Shag. 



See No. 79. 



Tail composed of twelve feathers. 



Phalacrocorax dilophus, and races. Double crested Cormorant and Florida Cormorant. 



See Nos. 80 and 81 



The Mexican Cormorant, a smaller species, occasionally occurs in the Mississippi Valley. 



* For directions for measurement, see page 9. 



