BIRDS OF COLORADO. 
195 
Page 55. 146. Aythya americana. Redhead. 
Facts are accumulating which make it probable that this 
species will in the near future be accounted among the breeding 
birds of Colorado. Several of these birds stayed in the reservoir 
at City Park in Denver all the summers of 1898 and 1899, but 
there was nothing to indicate that they nested there. A red¬ 
headed duck, presumably of this species, a fine male, was shot at 
the San Luis Lakes, June 18, 1898. This species, as well as the 
Canvas-back, is known to breed from northern United States 
northward. 
Page 55. 147. Aythya vallisneria. Canvas back. 
Page 55. 148. Aythya marila. Scaup Duck. 
Page 56. 149. Aythya affinis. Lesser Scaup Duck. 
These three have been taken by Mr. Carter at Breckenridge 
in migration. 
Page 56. 152. Clangula islandica. Barrow’s Golden-eye. 
Mr. Carter reports these ducks as common breeders in 
Middle Park, and that he once found them nesting at Georgia 
Pass at an altitude of 10,000 feet. As recorded by Brewer, B. N. 
0. C. IV, 1879, p. I 4 . 8 , Mr. Carter took in Colorado in 1876 the 
first eggs of this species known to science. 
Paae 56. 153. Charitonetta albeola. Buffle-head. 
In the Carter collection is a fine male taken in Middle 
Park April 14, 1877, and a female taken May 5, 1884. Mr. 
Carter says that later in 1884, sometime in July, in Middle Park, 
he took both male and female. The male was in such worn 
plumage that it was not saved. The female was kept and 
mounted, but is not now on hand. Known to breed from 
northern United States northward. 
Page 56. 154. Harelda hyemalis. Old-Squaw. 
On October 16, 1898, B. Haywood killed two at Calkins’ 
Lake near Longmont. On October 23 he killed another at the 
same place. Skins of two of these are now at the capitol at 
Denver. 
Page 57. 155. Histrionicus histrionicus. Harlequin Duck. 
Mr. Carter has found it breeding in Middle Park and on the 
Blue river a little below Breckenridge at 9,200 feet altitude. 
Page 57. 165. Oidemia deglandi. White-winged Scoter. 
One was shot on Barr Lake near Denver, November 2,1898, 
and reported by Mr. Fenton. 
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