Field Street
In the Shawnee National Forest the red-eyed vireos are getting scarcer, the cerulean warblers are nearly extirpated, and the remaining wood thrushes are raising cowbirds. Best of Chicago voting is live now. Vote for your favorites » And what the data reveal is a picture of the lack of reproductive success of many species of neotropical migrant forest-interior birds. These birds are hurting in part because of the loss of winter habitat caused by the destruction of tropical forests, but their problems on their summer range seem to stem from the fragmentation of the local landscape, which exposes these birds to the hazards of life on the forest edge, particularly to high rates of predation–by raccoons, opossums, and other animals–and brood parasitism by the brown-headed cowbird....