30 BIRDS OF COLORADO. 



Drew, F. M. Field Notes on the Birds of San Juan County, 

 Colorado. B. N. O. C. VI. \%%^, pp. 85 and 138. 



Notes of the occurrence, migration and breeding of 104 species that range 

 to or above 10,000 feet. Contains the first Colorado records of Histriomcus 

 histrionicus, Ceophlceus pileatus, Cypseloides niger, Loxia leucoptera and Den- 

 droica grades. 



Drew, F. M. Song of the White-bellied Swallow (/i^2^i3^roc«^ 



bicolor). B. N. O. C. VI. 1881,/. 115. 



"A peculiar chirrupy warble, bearing resemblance to a sparrow's song in 

 some respects and strikingly like a robin's in some of the half- whistles. " 



Drew, F. M. The Golden-crested Wren Breeding in the 

 Colorado Valley. B. N. O. C. VI 1881,/. 244. 

 A young bird just from the nest, taken in San Juan County, Colorado, on 



July 25, 1881, at 11,000 feet. 



Drew, F. M. Lopibes hyperboreus at 9,500 feet. B. N. O. 

 C. VI. 188 1, /. 249. 

 Six killed by flying against the telegraph wires. 



Drew, F. M. Notes on the Plumage of Nephoecetes niger 

 borealis. B. N. O. C. VII 1882, p. 182. 

 Believes that four years are necessary to acquire full plumage. 



Drew, F. M. Notes on Lagopus leucurus. Auk, /, 1884, p. 



392- 



On the moulting of the toe-nails of specimens taken in southern Colorado. 



Drew, F. M. On the Vertical Range of Birds in Colorado. 

 Auk, II 1885, p. II. 



One of the most notable articles ever written on Colorado birds. It gives: 



1. The highest altitude at which each species is known to range in the spring. 



2. The same for the summer. 3. The same for the autumn. 4. The upper 

 and lower limits of altitude, between which the species ranges during the 

 winter. 5. The upper and lower limits of the breeding range. 



The list is preceded by a short sketch of the topography of the state and 

 a brief summary of its meteorological conditions. 



The article is intended to present a complete list of the birds of Colorado 

 known to that time. It contains 277 species classified as follows: 



I. Residents, SI. 2. Summer residents, known to breed, 156. 3. Total 

 breeders, 207. 4. Migrants, 21. 5. Winter visitants, 22. 6. Summer visi- 

 tants, not known to breed, 5. 7. Known to occur within the state, but not 

 classified, 22. Total, 277. 



The article contains the first records for Colorado of Colymbus holballii, 

 Colinus virginianus, CaUipepla californica and Cardinalis cardinalis. 



DwiGHT, Jonathan, Jr. The Horned Larks of North America, 

 Auk, VII 1890, p. 138. 



Breeding birds of Colorado said to be arenicola. 



Fisher, A. K. U. S. Department of Agriculture. Division 

 of Ornithology and Mammalogy. Bulletin No. 3. The 

 Hawks and Owls of the United States in their Relation to 

 Agriculture. Prepared under the direction of Dr. C. Hart 



