Virginia scientists discover the cues black bears use for hibernation

More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. A black bear walks through the forest of Shenandoah National Park in Virginia. Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy . Researchers have long assumed that the timing of American black bear () annual hibernation mostly depends on temperature.