74, WyYoMING Birps. 
CINCLIDAE (Dippers). 
701. Cinclus mexicanus unicolor: Dipper. 
Fairly common summer resident on the mountain streams. 
Its migrations are mainly vertical. During the summer they 
nest far up in the mountains and in the winters they de- 
scend to the foothills and streams, where they can find open 
water. 
MIMIDAE (Thrashers, Mockingbirds, etc.). 
’ The Thrashers and Catbirds nest in small bushes or shrubs. 
They stay near the ground as a general thing and feed their young 
upon cutworms, grubs, various kinds of caterpillars, and adult in- 
sects. The adult birds also consume many insects, but they are also 
fond of fruit. A Catbird now and then will feed upon honey bees. 
These birds like to build near human dwellings and their company 
is worth cultivating. 
REFERENCES : 
1. “Useful Birds and Their Protection,’ Forebush, pp. 178-184. 
2. Farmers’ Bulletin No. 54, pp. 33-35 and 39-41. 
3. Year Book of the Department of Agriculture, 1900, pp. 303- 
304 and 415-416. 
4. North American Fauna No. 33, p. 241. 
702. Oreoscoptes montanus: Sage Thrasher. 
Common summer resident throughout the sage-brush and 
plains region. The type specimen was taken at Sandy Creek, 
Wyoming. 
703a. Mimus polyglottos leucopterus: Western Mockingbird. 
Knight recorded polyglottos, but the record is here consid- 
ered as leucopterus. Peabody records it. Uncommon in 
this state. 
704. Dumetella carolinensis: Catbird. 
Common summer resident along the streams of the plains 
and lower altitudes. 
705. Texostoma rufum: Brown Thrasher. 
Knight recorded it as summer resident not uncommon in 
eastern Wyoming, especially in areas that are below 7,000 
feet elevation. Metz, Lockwood, Clearwaters, and Percival 
all record it. 
