COOTS. 223 



but head is moved as in the last; dives but 

 does not use wings under water. Breeds 

 chiefly in northern U. S. and southern 

 Canada; occurring more rarely north to 

 Greenland and Alaska; goes south, largely 

 through the interior (but occurring in 

 immense, compact flocks at this season on 

 fresh and brackish waters in Fla.); north in 

 May when less common along Atlantic 

 border. 



188. EUROPEAN COOT. 



Differs from last in having edge of 

 wing and first primary white, and there is 

 no white on under tail coverts. Northern 

 Eastern Hemisphere; accidental in Green- 

 land. 



DUCKS, GEESE, AND SWANS. 



Water birds which swim readily. They 

 occur upon both salt and fresh water. 

 Usually social, frequently assembling in 

 large flocks. Sexes, dissimilar. 



