Wyoming Experiment Station. 



nishing- valuable data regarding the birds of their own vicinity ; 

 all of which is acknowledged in the body of the Bulletin. 

 Messrs. Bond and Jesurun each furnished data pertaining to 

 over 200 species. To Mr. Chas. W. Gilmore, a faithful and 

 deserving student, I wish to more than thank, for without his 

 assistance this bulletin would have been an impossibility. Again 

 I thank Mr. Bond for the excellent work he has done in mak- 

 ing the drawings, and also for donating all of the line work from 

 which the zinc etchings were made. 



NOMENCLATURE. 



In this bulletin the A. O. U. check list has been followed as 

 closely as possible. With the exception of the ninth and tenth 

 supplements of the revised second edition I am unfamiliar, and 

 there may be some changes adopted in the supplements number- 

 ing from 1 to 8, inclusive, that I have not included. In a few 

 instances I have followed Ridgway in his Bulletin No. 50, 

 Smithsonian Institution, and have placed an interrogation after 

 the number, not knowing whether they have been adopted by 

 the committee or not. 



A NOTE ON STUDYING BIRDS. 



The study of birds is one of those intensely interesting 

 subjects that can be taken up by any one. I do not mean by 

 this statement that any one can become an ornithologist ; but 

 that all can with due care and study become well acquainted 

 with the birds of their own vicinity, and add much valuable 

 data to the bird literature by careful observations. 



In case you are not familiar with birds, the first thing 

 will be to purchase a few books that will describe the characters 

 that are used in description. After one is fairly well posted on 

 this line it will be well to purchase a book entitled Robert Ridg- 



