Bears may be seen in Yellowstone March through November. Yellowstone is one of the only areas south of Canada that still has large grizzly bear (Ursus arctos) populations. In 2007, the U.S. Fish and Wildlife Service announced that the GYE grizzly bear population segment had recovered sufficient numbers and distribution to be removed from the threatened list. In 2009, the population was returned to the threatened species list; management continues under the 2006 revision of the recovery plan. Grizzly bears are usually seen in the open areas. Look for black bears along the edges of trees in the Lamar and Hayden valleys, or among the trees near Mammoth and Tower.

Bear Management Office Recent Publications
Bear Management Update	Menstruating Women
Bear Characteristics	Mortality
Bear Foods	Recovery Parameters
Denning/Hibernation	Sightings
Human Injuries	Bear Sighting Form
Bear Management Areas

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Video: Identifying Black Bears & Grizzly Bears (Requires Windows Media Player) Yellowstone is prime habitat for both grizzly bears and black bears. With a little luck, you might spot one on a visit to the park. But it's not as easy as you might think to tell them apart.

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