BIRDS OF COLORADO. 23 



Baird, S. F., Brewer, T. M. and Ridgway, R. A History 



of North American Birds. Land Birds, Vol. I.-[III.]. 



Boston, Little, Brown and Company, 1874. 3 vols. 



Contains specific Colorado references on 54 species, nothing of which is 

 new material. 



Batchelder, C. F. Description of the First Plumage of 

 Clarke's Crow. Auk, Vol. I. 1884, P- id- 

 Specimens obtained in Chaifee County, Colorado. 



Batchelder, C. F. An Undescribed Subspecies of Dryobates 

 pubescens. Auk, VI. 1889, p. 2jj. 

 Describes /?. p. orececus (^homorus) with type from Lovelaud, Colorado. 



Batty, J. H. The U. S. Geological Survey. Forest and 

 Stream, I. August 28, 1873, p. jj. 



Brief notes of a trip from Denver to Buffalo Peaks. Mentions seven spe 

 cies of common birds and in addition says ; "I have also taken the nest, eggs 

 and young of the Regulus calendula (ruby-crowned wren), which have never 

 been taken before." 



Batty, J. H. The White-tailed Ptarmigan — Lagopus leucu- 

 rus. Forest and Stream, I. January 2g, 1874, p. jgo. 

 Seen in winter in the foothills of South Park, Colorado. 



Beckham, C. W. The Black-headed Grosbeak {Zamelodin 



melanocephald). O. and O. VIII. 1883,/. <5j. 



Notes on the nest and eggs. A male seen incubating near Pueblo, Colo- 

 rado. 



Beckham, C. W. Notes on Some of the Birds of Pueblo, 



Colorado. Auk, II. 1885, p. ijg. 



Brief records of the movements of 91 species of birds. Contains the first 

 record for Colorado of Thryothorus bewickii leucogaster and, with one excep- 

 tion, the only record to date. 



Beckham, C. W. Additional Notes on the Birds of Pueblo 



County, Colorado. Auk, IV. 1887, p. 120. 



Addition of 22 species to the 91 previously noted and further notes on 

 28 species in the original list. First records for Colorado of Zonotrichia que- 

 rula and Z. albicollis. There has been a second specimen of the latter taken; 

 the former remains the only record for the state. 



Bendire, C. E. Notes on the Habits, Nests and Eggs of the 

 Genus Sphyrapicus Baird. Auk, V. 1888, p. 226. 

 Contains extended notes by Mr. Dennis Gale on the habits of 5'. v. nuchalis 



in Colorado. 



Bendire, C. E. Notes on the Habits, Nests and Eggs of the 

 Genus Glaucidium Boie. Auk, V. 1888, p. j66. 

 States that the form found in Colorado is G. gnoma. 



Bendire, C. E. A Peculiar Nest of Cinclus mexicanus. Auk, 

 VI 1889,/. 75. 

 Describes one taken by Mr. Dennis Gale at Gold Hill. 



