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Updated 11 November 2004

Consequences Vol. 3, No. 1, 1997
 

 

 

 

 

 

 

 
Table 3. Songbirds of forests and shrublands in Illinois whose nests are now heavily parasitized by cowbirds
Species Percentage of nests that are parasitized,
showing range of data in different study sites
Veery 75-95%
Wood Thrush 70-98
Hooded Warbler 60-90
Red-eyed Vireo 55-90
Scarlet Tanager 60-85
Orchard Oriole 40-92
Summer Tanager 50-80
Bell's Vireo 50-80
Ovenbird 50-75
Acadian Flycatcher 25-80
Cerulean Warbler 30-75
Indigo Bunting 25-77
Yellow-breasted Chat 25-75
White-eyed Vireo 30-65
Louisiana Waterthrush 20-70
Kentucky Warbler 30-60
Worm-eating Warbler 30-50

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