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Bulletin Wisconsin Natural History Society [Vol. 11, No. 4 
Geothlypis trichas trichas (Linnaeus). Maryland Yellow- 
Throat 
A common migrant and summer resident in suitable localities. 
Found abundantly in the spring and fall among the bushes along 
the Oconomowoc River between Oconomowoc and Fowler Lakes. 
Wilsonia pusilla pusilla (Wilson). Wilson’s Warbler 
One of the last migrants to arrive in the spring, but common 
for a few days. The latest spring record is that of two seen on 
June 2, 1913. 
Wilsonia canadensis (Linnaeus). Canada Warbler 
A common migrant and usually a late arrival, often just pre- 
ceding the Wilson’s warbler. Two were seen September 8, 1913. 
The birds are more common in the spring than in the fall. 
Setophaga ruticilla (Linnaeus). Redstart 
An abundant summer resident breeding throughout the county. 
The nests are often placed within two feet of the ground, and 
many are ravaged by the red squirrels ( Sciurus hudsonicus) or 
chipmunks (.Tamias striatus). 
Dumetella carolinensis (Linnaeus). Catbird 
An abundant summer resident and breeding species, arriving 
during the first week of May, or possibly even the end of April. 
Nesting begins very soon after the birds arrive, and often two 
broods are raised a season. 
Toxostoma rufum (Linnaeus). Brown Thrasher 
A common summer resident and nesting species, arriving 
about the first week in May. In 1913, five nests were located: 
four in brush pine, all within 20 inches of the ground, and one 
on the ground in a patch of clover without any protection 
whatever. 
Troglodytes aedon aedon (Vieillot). House Wren 
One of our commonest summer residents, nesting in any adapt- 
able place, such as a wood-pile, an empty pipe, a decayed fence 
post, and nesting boxes having openings small enough to exclude 
the English sparrow. In 1911, a pair nested inside of an unused 
street lamp in Oconomowoc, filling the entire chimney with 
