In the forests of Ecuador, plain-tailed wrens nest in bamboo thickets, singing complex and continuous melodies. Residing nearby are rufous antpittas, small, secretive birds that hop like thrushes and ...

Using the emphatic sounds of two bird species in Ecuador, a researcher has -- for the first time in peer-reviewed research -- examined the effects of birdwatchers' "playbacks" in the wild. He shows ...