A collaborative study with a CU Boulder professor investigates how the risks and rewards of red squirrel reproduction is a microcosm of evolutionary patterns You’ve probably seen plenty of squirrels ...

A ground squirrel with cheeks stuffed with nuts, seeds or grains is a common sight. But a new study provides the first evidence that California ground squirrels also hunt, kill and eat voles. The ...

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Female red squirrels are so promiscuous that they sometimes mate with up to 14 males in a single day, new research finds. Subscribe to read this story ad-free Get unlimited access to ad-free articles ...