Fork-Tailed Flycatchers Make Sounds With Their Feathers in Different Accents

Fork-Tailed Flycatchers Make Sounds With Their Feathers in Different Accents (Inside Science) -- The fork-tailed flycatcher whistles with its wings in two different accents, potentially more evidence this bird is splitting into two species, a new study finds. Birds are known for the songs they can sing, but dozens of species also use their feathers to generate sounds. For instance, peacocks can rattle their quills together, and the crested pigeon's wings whistle when they...