The Presidential Daily Brief


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    Study: Squirrels Eavesdrop on Birds for Safety

    The shriek of a red-tailed hawk is enough to make squirrels nervous — but the pleasant chirps of easygoing birds are effectively a green light to forage, research has found. While most studies have focused on how animals tune in to other species’ alarm calls and other signs of danger, an Oberlin College team discovered that squirrels interpret unconcerned avian chatter as a signal that it’s safe to be out and about.

    Why does it matter? Researchers say there’s increasing interest in more nuanced networks of communication in nature, calling it “Facebook for birds.”

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