Wyoming Experiment Station. 



Those in the state who have been sufficiently interested 

 in the birds to make collections have furnished valuable infor- 

 mation, all of which is duly accredited under the heading "Ac- 

 knowledgments." 



The published notes have not been satisfactorily disposed 

 •of. Some of the earlier work is a half century old, and to make 

 this conform to the present nomenclature without having the 

 specimens to consult, is more difficult than it appears on the 

 onset. Where the early data could be placed unquestionably 

 this was done. In other cases they were as a rule placed in 

 accordance with the recent geographical distribution of the 

 •species. Since there are many eastern and western forms 

 that mingle in eastern Wyoming it will be necessary to have 

 extensive collections made before many points can be settled. 

 The fact that many new species and varieties have been named 

 during the last quarter of a century caused a great deal of 

 confusion, since in many cases it was impossible to tell anything 

 about the specimens that had been collected. 



The material in this bulletin is a very insignificant contri- 

 bution to the history of the birds of the state, and is offered 

 as an aid rather than a study of this great subject. Vast areas 

 in the state remain without having been visited and no locality 

 has been sufficiently worked to secure all of the attainable data. 

 Southwestern Wyoming offers special inducements for the 

 study of birds, and there are only a few references to Uinta 

 county in this publication. 



In collecting these data there has been but one aim — scientific 

 accuracy. No attempt has been made to swell the list so that it 

 might compare favorably with or exceed the adjoining states. 

 Unless there has been good reasons for including data they have 

 been set aside. Those who have furnished data have in every 

 instance been fully competent to judge as to the legality of 

 the determinations, and it is hoped that there will be but few 

 if any birds included in this list which will not be found by fu- 

 ture collectors. It is my opinion that within the next ten years 

 the list will be increased by at least fifteen or twenty species. 



