A superb fairy-wren calls to a Horsfield's bronze-cuckoo. Brood parasites like cuckoos lay eggs in other birds' nests and leave them behind for the host birds to raise. David Ongley / Cornell Lab of ...

In some of the, well, less stressful corners of social media, you can hear all kinds of bird calls, people sharing recordings of birds that they took with their phones. (SOUNDBITE OF ARCHIVED ...

Birds across the globe independently evolved a shared warning call against parasites, blending instinct and learning in a remarkable evolutionary pattern. The finding offers a rare glimpse into how ...