Researching black bears in winter dens

MassWildlife biologists visit black bear dens every winter to collect valuable data.

Where Sleeping Bears Lie, Alaska Department of Fish and Game

DNR Asks Public to Report Bear Dens This Winter

UW-Stevens Point project sheds light on Wisconsin's black bears

Bear Hibernation: More Than a Winter's Nap

When Will They Den? - UPDATE September 15, 2014 - The Wildlife

Black Bear for the Win - Science Friday

Bear Hibernation: Facts and Myths from the Den

Black bear den in New Hampshire.

Into the Bear's Lair, January–February 2020