birds

Climate change is making birds smaller

December 5, 2019

When birds strike buildings in Chicago, they sometimes end up in the Field Museum of Natural History, where they’re kept as specimens. This unique collection has ...

What messages are bird bacteria sending?

November 20, 2019

To communicate with each other, birds use songs, calls and plumage. But they also use scent, thanks to oil glands above the tail — and maybe also, according to ...
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