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 ASTUR COOPERII— BONAP 



COOPER'S HAWK. 



Cooper's Hawk, Falco Cooperii, Bonap. Amer. Orn. 



Falco Cooperii, Bonap. Syn. 



Stanley Hawk, Falco Stanleii, Aud. Orn. Biog. 



Specific Characters — Tarsi two inches and a half long, which, 

 with the feet, are much stronger than those parts of the preceding 

 species, but not sp robust, nor has it the tarsi so fully feathered, or 

 the tibial feathers as long as has the Goshawk. Tail rounded with 

 four black bands and tipped with white. Adult with the 

 upper part of the head brownish-black : back brown ; the fore part 

 darker ; tail same as the back, banded with black and tipped with 

 white ; lower parts reddish-brown, barred with white, the shafts 

 black, giving it a striped appearance ; lower tail-coverts white ; 

 tibial feathers of a deeper color than the lower parts, and faintly 

 barred with white ; tarsi strong ; tail rounded, the middle pair of 

 feathers nine inches and a half long. Young with the lower 

 parts pale yellowish-white, marked with long spots of dark brown. 

 Length of adult male nineteen inches, wing eleven inches. Like 

 all rapacious birds, the female is the largest. 



This rather common species is distributed over the United 

 States, and according to Mr. Nuttall, seen in the Oregon Territory 

 to the shores of the Pacific. It preys on various species of birds, 

 and sometimes descends upon small quadrupeds. In our section, 

 during winter, I have never observed it, and I am not aware that it 

 breeds here. 



