LYCOS RETRIEVER 
Brown Bear: Species
built 655 days ago
In response to concerns about the brown bear population, the IBBST was formed and to study brown bear movement, physiology, and habitat requirements. The data being collected will help biologists and managers understand the resource needs and range requirements of the species.
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Brown bears will often use their large size to intimidate wolves from their kills. In Yellowstone National Park, brown bears pirate wolf kills so often that Yellowstone’s Wolf Project Director Doug Smith once wrote: "It’s not a matter of if the bears will come calling after a kill, but when." Though conflict over carcasses is common, the two predators will on some rare occasions tolerate each other on the same kill. Both species will prey on each others cubs, given the opportunity. [9]
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There is little agreement on classification of brown bears. Some systems have proposed as many as 90 sub-species while recent DNA analysis has identified as few as five clades. The subspecies of brown bears have been listed as follows:[5] one of which (called clade I by Waits, et al., part of the subspecies identified as U. a. sitkensis, by Hall and U. a. dalli by Kurtén) appears to be more closely related to the polar bear than to other brown bears.[2]
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