PhysOrg Posted August 19, 2016 Share Posted August 19, 2016 For decades, conservationists have considered blue-winged warblers to be a threat to golden-winged warblers, a species being considered for federal Endangered Species protection. Blue-winged warbler populations have declined 66 percent since 1968, according to the North American Breeding Bird Survey. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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