94 



DUCK SHOOTING. 



These last are sometimes almost buff, without any 

 streaking. The speculum, or iridescent wing patch, 

 is sometimes metallic-green and sometimes violet, 

 edged with black. The bill is yellowish-green and the 

 nail dark, while the feet are orange-red, the webs 

 dusky. Length, 22 inches; wing, 11. The sexes are 

 essentially alike. 



Since the first edition of this book was published, 

 Mr. William Brewster has described {Auk xix, p. 183, 

 April, 1892) a new form of black duck {A. ohscura 

 ruhripcs). It is slightly larger than the common form, 

 has the dark feathers of crown edged with gray or 

 yellowish, the dark markings on foreneck and sides of 

 head coarser and blacker, bill yellow, tarsi and toes 

 bright red. Its distribution is apparently northern 

 and western. 



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