Pigeons Sound the Alarm with Whistling Feathers

When the crested pigeon of Australia flees potential foes, it can raise an alarm — not by calling out vocally, but with whistling feathers in its wings. These new findings may be the first proof of an idea Darwin proposed nearly 150 years ago suggesting that birds could use feathers as musical instruments for communication.

Birds are known for the songs they can sing, but many can also generate unusual noises with their feathers. Darwin called these sounds “instrumental music” in his 1871

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