BIRDS OF COLORADO. 
151 
BIBLIOGRAPHY OF COLORADO ORNITHOLOGY. 
Page 25. Add. Berthoud, E. E. Birds, their Geological 
History, Migration and Uses. By E. E- Berthoud, A. M., 
Member Phila. Academy and N. Y. Academy of Sciences. 
Transcript Prints Golden, Colo. [Issued in 1887.] 
Short notes on twenty-four species of Colorado birds with reference to 
their distribution and migration. Includes the Wild Turkey and the Carolina 
Paroquet. 
Page 27. Add. Cockerell, T. D. A. The Food of Some 
Colorado Birds. Am. Nat. XXV. 1896,/. 
Examinations of the stomach contents of eleven species, taken by W. P. 
Lowe in various places in southern Colorado. 
Page 27. Add. W. W. Cooke. The State Agricultural Col¬ 
lege, The Agricultural Experiment Station, Bulletin No. 
37, Technical Series No. 2, The Birds of Colorado. By 
W. W. Cooke. Approved by the Station Council. Alston 
Ellis, President. Fort Collins, Colorado, March, 1897. 
The Smith-Brooks Printing Company, Denver, pp. 
[Date of distribution, March 14, 1897.] 
Contains an introduction on the general bird life of the State; Classifica¬ 
tion ; giving lists of the birds with reference to their distribution and breeding. 
Dates of migration ; a comparison of migration in different parts of Colorado 
with dates of arrival of the same species at St. Louis. Bibliography of Colorado 
ornithology ; references to 1S2 books and articles. History of Colorado ornith- 
\ giving the authority, date and place of publication for the introduction 
of each species into the list of Colorado birds. Birds of Colorado ; being a list 
with brief annotations of the 363 species known to occur in the State. 
Cooke, W. W. The Scarlet Ibis in Colorado. Atik^ XIV 
1897. 
Note on the alleged occurrence of this species in the Arkansas Valley. 
The article is based on a mis-identification, the birds taken being really the 
White-faced Glossy Ibis. 
Cooke, W. W. Bendire’s Thrasher in Colorado. Osprey^ II. 
7. 
Nests and eggs taken by Mr. N. R. Christie at Rouse Junction. 
Cooke, W. W. A New Bird for Colorado. Oregon Naturalist., 
IV 1897-8, p. dj. 
A specimen of the Calliope Hummingbird found at Colorado Springs, 
July 25, 1897. 
