PRELIMINARY LIST OF BIRDS OF BOULDER 

 COUNTY, COLORADO 



By Junius Henderson 



This list of 160 species must be considered strictly prelimi- 

 nary and very incomplete. The latest, available list for the state — 

 that of Leander Keyser in "Birds of the Eockies" — records 389 

 species for the state. Many of these undoubtedly visit Boulder 

 County which have not come to the attention of the writer. Species 

 reported upon doubtful identification have either been omitted or fol- 

 lowed by an interrogation point. The plan has been to first list the 

 species of which specimens taken in the county are now in the Uni- 

 versity collection, adding to these the species not in the collection 

 but mentioned in the manuscript lists of the writer and of 

 "Walter Blanchard, those reported by C. W. Rowland and James 

 Cowie, those reported by Dennis Gale in Bendire's " Life Histories 

 of North American Birds," H. D. Minot's list published in a bulle- 

 tin of the Nuttall Ornithological Club many years ago, and those re- 

 ported by Mrs. Maxwell, C. J. Hersey, H. G. Smith, R. D. Campbell, 

 Wm. A. Sprague, R. C. McGregor, A. W. Anthony and Prof. W. 

 W. Cooke, in the three Bulletins prepared by the latter for the State 

 Agricultural College, on the "Birds of Colorado." The name in 

 parentheses following the name of a species indicates the person on 

 whose authority it is reported, and all species not so followed by a 

 name are now represented in the collection. Most of the species in 

 the collection were mounted by L. C. Bragg, of Boulder, without 

 expense to the institution except for materials required, and many of 

 them were taken by him. A number of species now in his hands 

 may be in the collection before the publication of this paper. 



