376 STANLEY HAWK— COOPER'S HAWK. 



The eggs of our bird measure two inches and a quarter in length, 

 one inch and five and a half eighths in breadth. They are sometimes 

 pale greenish-blue, or bluish-white, without spots. 



STANLEY HAWK.— COOPER'S HAWK. 



Falco Stanleyii, and Falco Cooperii. Bonap. 



PLATE XXXVI. Vol. I. p. 186. Yotjng in Winter. 

 PLATE CXLI. Vol. II. p. 245. Adult Male. 



I feel perfectly convinced that the specimens of this Hawk figured 

 in my plates, belong to the same species as the bird named Falco 

 Cooperii by the Prince of Musignano before I published my account 

 of it. I must, however, inform you that the naturalist just mentioned 

 saw my original drawing, which I made in Louisiana, several years be- 

 fore he received his specimen from Mr Cooper, and that he acknow- 

 ledged to me that he had not before seen any of the kind. The name 

 which I gave it must, however, now give place to that of Falco or Astur 

 Cooperii. 



To the account of the habits of this bird already given, I have to 

 add, that it extends its migrations to the Valley of the Columbia River, 

 where it was observed by Dr Townsend. I may here give you another 

 instance of its audacity. My friend Dr Bachman shewed me a beau- 

 tiful specimen alive, which had thrust itself into one of his aviaries, at- 

 tracted by some Pheasants confined there. He presented it to me, and 

 its skin is now in my possession, along with many others. 



The eggs, which are usually four in number, measiu'e one inch seven- 

 eighths in length, an inch and six and a half twelfths in breadth, and 

 are much rounded at both ends. On some of them I found a few large 

 markings of a dull yellowish-cream colour. 



sik 



