Declining male offspring further imperil endangered flycatchers in southern California
Wednesday, December 21, 2016 - 03:03
in Biology & Nature
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.