KEY TO DUCKS, GEESE AXT) SWANS OF NORTH AMERICA. 



27 



Axillars, white; the shafts, white; head, 

 speckled ; exposed speculum, black niul white. 



Gadwall. 

 Creek Duck. 



Anns strepera (^female) . 

 See page 44. 



Axillars, white, with dark shafts; speculum, green and black; white patch 

 <iii shoulder; top of head, white. American widgeon. 



Baldpate. 



Anas americana (male). 

 See page 4.5. 



Axillars, white with dark shafts; no white shoulder patch: head, speckled. 



American Widgeon. 

 Baldpate. 



Anas americana (female). 

 See page 4.5. 



Axillars, grayish white; head, brown, not speckled; stripe of white on sides 

 (d' ueck ; tail pointed; middle feathers long. Pintail Duck. 



Dnfila acuta {male). 

 See page 51. 



Section 3. Hind toe, without membraneous lobe or flap ; 

 I '•} belly, not white. 



Speculum, bluish purple edged with white; 

 head, green; a white ring around neck; breast, 

 chestnut; belly, grayish white ; feet, orange red; 



axillars, white. 



Mallard Duck. 



Anas hosehas (male) . 

 See page 41. 



Anas liu.^rhas. " 



B<dly, white, showing more or less brown spots; axillars, white; bill, less than .!)() wide at 

 widest part; speculum, black and white. 



Gadwall. 



^Vnas strepera (female). 

 See page 44. 



■ "-* ' " -■ ^^ ■ 



Speculum, bluish purple, edged with 

 white and black; head, tawny 

 brown, streaked with dark brown ; 



belly, pale bull', mottled with brown ; 

 feet, orange red; axillars, white. 



Mallard Duck, 



Anas hosehas {female). 

 See page 41. 

 Anas boschas. 



