Fisher Decline in Northern California

The Hoopa Valley Tribe, in cooperation with the Wildlife Conservation Society and the University of Massachusetts, reported a 73-percent decline in the density of fishers — a house-cat sized member of the weasel family and candidate for endangered species listing on the Hoopa Valley Indian Reservation in northwestern California between 1998 and 2005.
http://www.sciencedaily.com/releases/2011/07/110705132851.htm
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