54 



UUCKS, «EESE AND SWANS OF NORTH AMERICA. 



to the Cai'oliiias during the winter, in suitable localities, and some birds occur 

 regularly in Florida and the northern West India Islands. The Red-head 

 may always be distinguished from the Canvas- back by the decided diflference 

 in the shape of the bill, the foreliead arching al)ruptly and not following the 

 line of the ))ill as in the Canvas-l)ack. 



The female Red-head closely resembles the female of the Ring-necked Duck, 

 but is larger. As a rule it does not breed on the Atlantic coast, although a 

 single instance is on record of a pair being found lireeding near Calais, Maine. 

 The nest, which is placed on the ground, is composed of grass and lined with 

 down. The ego-s are ei^bt to twelve, brownish white in color. 



Aytliya vallifiiieriji (iiiuk-J. 



{Keniille.) 



AYTHYA VALLISNERIA {IVils.). 



Canvas-back Duck. 



Ailult mnln: Head and neck, rufous lii-owii, Ix'comin^- iluskj- on the crowu auil chin; the 

 Ijreast and upper portion of the liac'l<, blackish; rest of upper parts and wing coverts showing 

 fine, wavy lines of Idack, general appearance l)eing grayish; lielly, white, the lower portion 

 faintly lined with dusky; sides, white, showiug tlie delicate lines as on the liack, Imt very 

 much fainter and sometimes wanting. 



