BIRDS OF COLORADO. 



27 



COCKERELL, T. D. A. The Sixth Report of the Colorado 

 Biological Association. Custer County Courant, January 

 16, 1889. 



Note from H W. Nash of the recent capture of the Pygmy Owl near 

 Pueblo. 



CoCKERELL, T. D. A. The Ninth Report of the Colorado 

 Biological Association. " Our Spring Migrants, " T. D. A. 

 C[ockerell]. Custer County Courant^ February^ 1889. 

 Dates of arrival for 1888 of 11 species. 



CoCKERELL, T. D. A. The Thirteenth Report of the Colorado 



Biological Association. Custer County Courant, March, 



1889. 



Robins first seen near Short Creek, March rg, 1889. 



[Oversheets of all these reports were issued, unpaged and mostly un- 

 dated ]. 



CoOKE, W. W. Ten New Birds for Colorado. Auk, XI. 1894, 



p. 182. 



Records of some 15 species, of which Oidemia deglandi, Ardetta exilis, 

 Calidris arenaria and Coccyzus erylhrophthalmus, proved to be new birds for 

 the State. 



Cooke, W. W. The Summer Range of Colorado Birds. Auk, 

 XII. zQgs^p.i^i. 



Gives recapitulation of the altitudes at which the birds breed in the State, 

 but mentions only a few species by name. 



CouES, E. Range of the Geococcyx californianus. Am. Nat- 

 uralist, VII. 1873, P- 75^- 

 Quotes a letter from Dr. A. Woodhull on the occurrence of this species 



on the Arkansas River near Fort Lyon, Colorado. 



CouES, E. Department of the Interior. United States Geolog- 

 ical Survey of the Territories. F. V. Hayden. U. S. 

 Geologist in Charge. Miscellaneous Publications No. 3. 

 Birds of the Northwest. A Hand-book of The Ornithol- 

 ogy of the Region drained by the Missouri River and its 

 Tributaries. By Elliott Coues, Captain and Assistant 

 Surgeon U. S. Armv. Washington: Government Printing 

 Office, 1874. pp. XII. 791. 



A large part of Colorado falling within the scope of this volume, there is 

 here collected nearly all that had been written on Colorado birds up to this 

 time. One hundred and forty-five species are attributed specifically to Colorado, 

 in addition to many whose habitat includes Colorado by implication. But the 

 most important part of the work with reference to Colorado, is the very full and 

 valuable notes of Mr. T. M. Trippe on the birds in the vicinity of Idaho Springs. 

 They form to-day the best record there is of the vertical movements of the birds 

 in spring and fall migration. 



CouES, E. On the Breeding Habits, Nest and Eggs of the 

 White-tailed Ptarmigan (Z,. leucurus). Bull. U. S. Geo- 

 logical Surv. Terr. 2d series. No. 5, January 8, 1876, pp. 

 26J-266. 

 Most of the material on which these notes are based came from Colorado. 



