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Zebra finches are small, highly social songbirds that breed in colonies in the Australian outback. (Unsplash/Angelo Casto)

Strong opinions matter: Why some birds refuse to follow the flock

Researchers observed male zebra finches to see if they would follow the flock when building a nest, or stick to their own preferences. It may help us think about conformity in our own species, too.
A male Olive-backed Euphonia (Euphonia gouldi), photographed in Costa Rica. Andy Morffew

Why do birds sing?

Birds spend a lot of time and energy singing, but they don’t do it the same way in every season of the year. And some can’t sing at all. What’s the purpose of birdsong?

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