sábado, 11 de mayo de 2019

The science of migratory birds | Technology News, The Indian Express

The science of migratory birds | Technology News, The Indian Express

By Deutsche Welle |Published: March 12, 2019 7:13:22 pm

The science of migratory birds

As spring begins we can hear the birds returning from winter. But why do they migrate? Are they coming back early this year? And why are they so loud?

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Why do birds actually migrate? Are they coming earlier this year? And why are they so loud? (Image: picture-alliance/blickwinkel/B. Lamm)


By Hannah Fuchs
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