BIRDS OF CODORADO. 
II9 
D. D. Stone records the shooting of one at Hancock, October 16, 
at 10,000 feet. It was in open water in the ice on a lake. Snow 
had been on the ground for two weeks and it was snowing at 
the time. (O. & O. VII. 1882, 181.) 
702. Oroscoptes montanus. Sage Thrasher. 
Summer resident; not uncommon. Comes east as far as 
the edge of the plains and is about in equal numbers along the 
eastern slope of the mountains and in western Colorado. Ar- 
rives early in April and breeds from the plains to nearly 10,000 
feet. Leaves the State late in October. 
703. Mimus polyglottos. Mockingbird. 
Summer resident; not uncommon, locally. In southeast- 
ern Colorado, along the Arkansas from Pueblo eastward, as 
abundant as at any place in the south. Fairly common north 
to Colorado Springs and thence is not common and irregular 
over the rest of the State east of the mountains. According to 
Ridgway, C. E. Aiken was the first to record the mockingbird 
from Colorado (Bui. Essex Inst. V. 1873, 178) but this is an error, 
since it was found by Maj. Long’s party, with nests and young 
at the Platte River near where Brighton now stands, July 4, 
1823. H. G. Smith reports them as quite common in 1895 
along Clear Creek near Denver and W. G. Smith says they used 
to breed on the Big Thompson near Loveland. F. M. Dille 
says that they used to breed abundantly in Greeley but left for 
isolated places because their young were so much sought. 
They breed regularly in the Republican Valley at the eastern 
end of Arapahoe County. During the summer of 1896, two 
pairs took up their residence on the grounds of the Agricultural 
College at Fort Collins where they had never before been seen. 
Four other pairs were noted in the neighboring foothills to 
about 6,000 feet. They have several times been seen at Chey- 
enne and Dr. Jesurn reports the capture of an adult male April 30, 
1894, at Douglas, Wyo., 150 miles north of Cheyenne. Arrives in 
southern Colorado the latter part of April and breeds early in 
June. Breeds mostly on the plains, but occasionally in the 
foothills to 8,000 feet. 
704. Galeoscoptes caroiinensis. Catbird. 
Summer resident; common. Breeds from the plains to 
about 8,000 feet. Arrives early in May and breeds the latter 
part of June. Shy, but fairly common on the plains and the 
eastern slope of the Rocky Mountains ; rare in western Colorado. 
Nowhere in the State is it so common as in most parts of the 
Mississippi Valley. Returns from the mountains to the plains 
in August. 
