32 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



* Group 5. Wing, over 8.50 inches long. 



Auk. 



Head and neck, black, easily distinguished 

 by the shape of the bill; a white line on bill". 

 Alcatorda. Razor* billed Auk. 

 See No. 15. 



Head and neck, sooty. brown ; bill pointed, no white line on bill. Una troile. Murre. 



See No. 13. 



* For direction for measurement, see page 9. 



