Warble duets seem linked to active territory defense. Physical fights in the wild were always preceded by warble duets. Playback experiments also showed that parrots increased warble duets when ...

With a few minutes of searching, anyone can find videos online of chatty birds: macaws talk to their keepers, cockatoos sing to the camera, corvids mimic the jarring sounds of construction sites.

A new paper published in Behavioral Ecology finds that songbirds may coordinate both vocally and visually to enhance their singing partners' responses. In many group-living animals pairs sing together ...