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Kerr WMA: Management Programs

Habitat Improvement: Black-capped Vireo

Black-capped vireos (singing males) increased from 27 in 1986 to 422 in 2002! Research results indicated that black-capped vireos on the Area increased disproportionately on burned sites than on unburned sites (i.e., bird numbers increased on burned sites, and were stable on unburned sites). Trapping brown-headed cowbirds has resulted in a decrease in nest depredation from 75% to 12%.

Chart showing the black-capped vireo population trends on Kerr WMA

Map showing the black-capped vireo locations on Kerr WMA in 1986
Map showing the black-capped vireo locations on Kerr WMA in 1998

The map to the left shows black-capped vireo locations on the Kerr WMA in 1986. The map on the right shows vireo locations on the Area in 1998. The holistic approach to wildlife management, implemented on the Kerr WMA, has resulted in a tremendous increase in vireo habitat.


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