62 Wyoming Experiment Station. 



mals, batrachians, and insects. Mr. Gavin Rawson saw one 

 of these Hawks make a bold dash at a muskrat, but it was un- 

 successful in the capture. From the following quotation by 

 Mr. Charles F. Morrison, it would appear that in Colorado 

 it feeds more extensively on insects than in most parts of the 

 country : 'It preys upon grouse, hares and reptiles. Its fond- 

 ness for the ranchman's poultry is very nearly paid for by 

 the insects it eats ; both this and the preceding adding grass- 

 hoppers and bugs to their bill of fare.' 



"The following examination, made by Dr. B. H. War- 

 ren, gives a very good summary of this Hawk's food : 'Of 

 the thirty-four birds which I have examined, sixteen showed 

 the food taken to have been chickens ; ten revealed small birds 

 — sparrows, warblers, and meadow-larks ; two, quail ; one, bull- 

 frog ; three, mice and insects ; two, hare and other remains 

 of small quadrupeds.' (Birds of Pennsylvania, 1888, p. 80.) 



"This species is preeminently a 'Chicken Hawk,' as may 

 be seen from the foregoing citations. Its devastations in this 

 direction are much greater than those of all the other hawks 

 and owls together, with the possible exception of the Sharp- 

 shinned Hawk, which attacks much smaller chickens." 



Drexel reports this bird from Fort Bridger; Wood from 

 Bridger Pass ; Bond from Cheyenne ; Knight from Big Horn 

 basin, Freezeout hills and Sundance. 



334. Accipiter atricapillus (AYils.). 

 American Goshawk. 



Probably a winter resident, but very rare if we are to 

 judge from the records. This bird should be found in reason- 

 able abundance. The only Wyoming record is the one re- 

 ported by Coues of a specimen taken on Deer creek by G. H. 

 Trook in i860. 



This is another hawk that causes great destruction among 

 birds and poultry and for this reason is a very undesirable 

 bird to allow about a ranch or farm. Fisher in "The Hawks 



