DIFFERENTIAL POINTS : 



See Circus hudsonius, Marsh Hawk. 



REMARKS : 



Fig. 2, Plate XLIX, represents the usual sizes, shapes, and colors of the eggs of the Cooper's Hawk. 

 Two of the eggs figured were collected by Mr. Chas. Dury, April 29th, 1879, near Cincinnati; the other 

 egg figured, came from a set collected in Ross County, in May, 1880. 



My experience in collecting the eggs of this species has been very limited. I have found numbers 

 of nests, but never an accessible one that contained fresh eggs. I raised from a nestling a male Cooper's 

 Hawk, and kept him until he was nearly a year old. He was an interesting pet, full of cunning and 

 boldness. He became so tame that he had the liberty of the town. He would wander about from 

 tree to house-top, and would sometimes be gone a whole clay. He was very fond of buggy-riding, and 

 would sit on the dash-board for hours manifesting the greatest interest in the objects passed. I intended 

 to teach him to hunt, and was making rapid progress with his lessons, when I was obliged to leave for 

 college. Some months later a letter brought me news of his death. A bov had killed him with a stone. 

 The Cooper's Hawk, or the Hen Hawk, as the species is called by the country people, is the most de- 

 structive to poultry of any of the family. It is active on the wing, and of courageous spirit, and does 

 not hesitate to attack birds much larger than itself. It catches many small birds upon the wing, and it 

 sometimes even attacks ducks. I have twice seen a Cooper's Hawk dart into a flock of Red-winged 

 Blackbirds, and in each instance it secured a Blackbird in its talons. 



Instead of Buteo cooperi, Plate XLIX, read Accipiter cooperi. 



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