BIRDS OF COLORADO. 35 



Nash, H. W. Notes on Some Birds Breeding in Colorado. 



Forest and Stream, Feb. 5, 1880. 



Short observations on the nests and eggs of 28 species breeding near 

 Pueblo. 



Nash, H. W. Colorado Bird Arrivals. Forest and Stream, 

 XX. April I g, 1883, p. 225. 

 Dates of arrival of the Eastern Bluebird and the Western Meadow Lark. 



NORRis, J. P. A series of Eggs of Sitta pygmsea. O. & O. 

 XIII. 1888, p. 173. 

 One set was taken in Estes Park, Colorado, May 29, 1886. 



OSBURN, Wm. Nesting of the Grebes. O. & O. XV. 1890, 

 p. 68. 

 Notes on the breeding of Podilymbus podiceps near Loveland, Colorado. 



OSBURN, Wm. Birds of Rare occurrence in Northern Colorado. 



Science, XXII. 1893, p. 212. 



Notes on nine species seldom found there, amrfng which Zonotrichia 

 coronata is the first and only record for Colorado. 



Peabody, p. B. Glossy Ibis at Heron Lake. Nidiologist, II. 



Refers to a mounted specimen in his possession taken near Colorado 

 Springs, Colorado. 



Pearce, Gordon D. Water Ousel or American Dipper. The 

 Sunny South Oblogist, I. No. i. 



Polk, Burr H. A Mallard's Strange Nesting Place. Forest 

 and Stream, XVIII. 1882,/. 4.27. 

 On the open prairie in eastern Colorado. 



RiDGWAY, Robert. On Some New Forms of North American 

 Birds. Am. Nat. VII. 1873, pp. 6oj and 6/j. 



Describes Catherpes mexicanus conspersus taken in Colorado by Aiken 

 and Allen and Junco hyemalis aikeni taken by Aiken near Fountain, El Paso 

 County, in the winter of 1871-2. 



RiDGWAY, R. The Birds of Colorado. Bull. Essex Inst. V. 



The first list of Colorado birds ever published ; 243 species, of which 156 

 are noted as breeding. The center of abundance of each species during the 

 breeding season is also given. The list is preceded by several tables. Eastern 

 species found in Colorado, 30. Others found at more western points, not yet 

 detected in Colorado, 15. [ Eleven of these have since been taken in Colorado, 

 and one more only three miles north of the State in Wyoming. ] Species of the 

 southern border of the United States found in Colorado, 10. Western species 

 found in Colorado not occurring in corresponding latitudes in the Great Basin, 5. 

 The list is followed by critical notes on several species. 



RiDGWAY, Robert. Description of a New Bird {Leucosticte 

 atrata) from Colorado. Am. Sportsman, IV. 1874, p. 241. 

 Four specimens taken by C. E. Aiken at Canon City, in April, 1874. 



