Arctic ground squirrel sheds light on circadian rhythms

The Arctic ground squirrel has developed highly specialized adaptations to extreme environments, and it has a lot to teach us about circadian rhythms and biological clocks. This species maintains circadian rhythms throughout ...

How rodents bulk up for winter without going nuts

When Arctic ground squirrels need to bulk up for winter, they get a boost from an enormous spike in the levels of steroids in their blood. So why doesn't it lead to 'roid rage?

The secret life of squirrels in New York City

A recent study has found eastern grey squirrels thrive in New York City's urban environment by adapting their behaviour according to cues from human pedestrians, and mostly by ignoring passers-by.

Grey squirrels stop garden birds using feeders

The presence of grey squirrels at standard, hanging bird feeders cuts the number of birds visiting them by a huge 98 per cent, the latest study reveals.

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