5 (168) In stock
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