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Bulletin Wisconsin Natural History Society [Vol. 11, No. 4 
Compsothlypis americana (Linneaus). Pakula Warbler 
A regular migrant, at times almost abundant, but rather erratic. 
Especially common the last week in May 1913. 
Dendroica tigrina (Gmelin). Cape May Warbler 
A regular migrant, though not usually very common. Almost 
abundant on September 8, 1913, when dozens of individuals were 
seen. 
Dendroica aestiva aestiva (Gmelin). Yellow Warbler 
An abundant summer resident, found nesting almost every- 
where. Arrives the first week in May, and begins nesting the 
last of the month. Another victim of the cowbird. 
Dendroica caerulescens caerulescens (Gmelin). Black- 
Throated Blue Warbler 
An abundant migrant during the last half of May and again 
during the first two weeks of September. 
Dendroica coronata (Linnaeus). Myrtle Warbler 
A very abundant migrant and the first warbler to arrive in the 
spring, appearing as early as the second week in April. The fall 
migration begins the third week in September, and individuals of 
this species are often seen until after the middle of October. 
Dendroica magnolia (Wilson). Magnolia Warbler 
A very common migrant, arriving during the first week of May. 
For a few days only, often one of the most abundant species in the 
fall migration. 
Dendroica pensylvanica (Linnaeus). Chestnut-Sided Warbler 
A common migrant, found often as late as the end of May, yet 
not, so far as is known, a breeding species in the county. 
Dendroica castanea (Wilson). Bay-Breasted Warbler 
An abundant migrant, arriving during second week of May 
and rarely seen after May 25. In 1913, the fall migration for 
this species began on September 6, when fourteen individuals 
were seen. 
Dendroica striata (J. R. Forster). Black-Poll Warbler 
A common migrant, and often the last warbler to arrive on 
both spring and fall migrations. Although late, they are always 
