Ducks. 



146. Redhead (Ay thy a americana). L. 19. Ad. tf. 

 Head and upper neck entirely bright reddish brown. 

 Ad. 9- Throat white; back grayish brown without 

 fine bars; speculum gray. Notes. "A hoarse guttural 

 rolling sound." (Elliot.) 



Range.— North America; breeds chiefly in interior from Maine, 

 Minnesota, and California north to Labrador and British Columbia; 

 winters from British Columbia and Maryland south to Lower Cali- 

 fornia and West Indies. 



147. Canvas-back {Ay thy a vallisneria). L. 21. Ad. 

 c?. Head and whole neck dull reddish brown. Ad. 9- 

 Head and neck rusty grayish brown; back grayish 

 brown, finely barred with black and white. Notes. "A 

 harsh guttural croak." (Elliot.) 



Range.— North America; breeds only in interior from Minnesota 

 and Oregon north to Alaska and the Barren Grounds; winters from '47. 

 British Columbia and Maryland south to southern California, Mexico 

 and West Indies. 



148. American Scaup Duck [Aythya marila). L. 

 <f\ 18.5; 9, 17.5. Ad. rj. Head glossed with green- 

 ish; sides without distinct black bars. Ad. 9. Feath- 

 ers about base of bill white; breast and back rusty 

 grayish brown; speculum white. Notes. "Similar to 

 the guttural sound made by the Canvas-back, Red- 

 head and other diving Ducks." (Elliot.) 



Range.— Northern parts of northern hemisphere; in America, breeds in 

 the interior rarely from Minnesota, and regularly from North Dakota 

 northward; winters from Long Island to northern South America. 



149. Lesser Scaup Duck {Aythya affinis). L. tf 17; 

 9,16.5. Ad. o 71 . Head glossed with purplish; sides 

 with distinct black bars. Ad. 9 . Similar to 9 of No. 

 148, but smaller. 



Range. — North America; breeds only in interior from Iowa rarely, 

 North Dakota commonly, and British Columbia, north to Barren /4g 

 Grounds: winters from British Columbia and Virginia south to Guat- 

 emala and West Indies. 



150. Ring-necked Duck {Aythya collaris). L. 16.5. 

 Ad. tf. A chestnut neck-ring; chin white; back black; 

 speculum gray. Ad. 9 • Feathers about sides of base 

 of bill and throat white, back and breast rusty grayish 

 brown; speculum gray. Resembles 9 of No. 146, but 

 is smaller and rustier. 



Range.— North America; breeding only in the interior from Minne- 

 sota northward; winters from Maryland and British Columbia south 

 to Guatemala and West Indies; rare on Atlantic coast north of Mary- 150 

 land. 



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