Study of bird migration tricky due to hybridization

Hybridization among bird species is a widespread phenomenon, which is best illustrated in Estonia by the lesser spotted eagle and the greater spotted eagle. However, due to the fact that the migration strategies of both bird ...

Rethinking planetary climate controls

Yale researchers have provided a new explanation for why Earth's early climate was more stable and warmer than it is today.

Lemurs can smell weakness in each other

Some people watch the competition carefully for the slightest signs of weakness. Lemurs, on the other hand, just give them a sniff.

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