PhysOrg Posted December 21, 2016 Share Posted December 21, 2016 A new study in The Condor: Ornithological Applications documents the steep decline of a population of endangered Southwestern Willow Flycatchers over 16 years—and the change in the sex ratio that has left the birds' future hanging on a dwindling number of males. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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