BIRDS OF COLORADO. 
35 
Nash, H. W. Notes on Some Birds Breeding in Colorado. 
Forest a7id Stream^ Feb. 5, 1880. 
Short observations on the nests and eggs of 28 species breeding near 
Pueblo. 
Nash, H. W. Colorado Bird Arrivals. Forest mid Stream.^ 
XX. April 79, 1883, p. 22^. 
Dates of arrival of the Eastern Bluebird and the Western Meadow Lark. 
Norris, J. P. A series of Eggs of Sitta pygmaea. O. & O. 
XIII. 1888, p. lyj. 
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. 
Scie7tce^ XXII. 1893, p. 212. 
Notes on nine species seldom found there, among which Zonotrichia 
coronata is the first and only record for Colorado. 
Peabody, P. B. Glossy Ibis at Heron Lake. Nidiologist., II. 
1895, p. 116. 
Refers to a mounted specimen in his possession taken near Colorado 
Springs, Colorado. 
Pearce, Gordon D. Water Ousel or American Dipper. The 
Sunny South Oologist^ I. No. i. 
Polk, Burr H. A Mallard’s Strange Nesting Place. Forest 
a7td. StreaTn^ XVIII. 1882, p. 4.2 y. 
On the open prairie in eastern Colorado. 
Ridgway, Robert. On Some New Forms of North American 
Birds. A7n. Nat. VII. 1873,//. ^^3 ^^ 5 - 
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 Ifist. V. 
1873. A 174- 
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. Spor'tsma7i^ IV. 1874, 241. 
Four specimens taken by C. E. Aiken at Canon City, in April, 1874. 
