In the sunbaked Galápagos Islands, a male finch perches on a branch, hearing what sounds like another bird’s song. But something’s not quite right. The song is slower and simpler, like a familiar tune played at the wrong speed. The bird cocks its head, ruffles its feathers, but stays put. It’s just been fooled by … Continue reading Droughts could change bird songs, creating new species, says study on Darwin’s finches