In the starkness of winter, squirrel dreys reveal themselves in the tree canopy. They’ve been there all along — just screened ...

The energy requirements of Adirondack populations probably exceed this amount. In autumn, gray squirrels clip nuts from the canopy, and scatter hoard them in the ground, relying on their keen sense of ...

Flying squirrels are the oldest living line of modern squirrels on the planet, having first appeared 30 million years ago. At home in the forest canopy and on the ground, these dexterous, social and ...

With climate change, the squirrels' forest habitat is moving upslope as temperatures warm, and drought threatens its truffle fungus food, which depends on wet, cool conditions. Forest-management ...