Warming Climate of American West Pushes Pike to Extinction January 4, 2006.

Tiny pikas seem to be on march toward extinction in Great Basin December 29, 2005.
Climate change, human factors likely culprits
The tiny rabbit-like American pika, an animal species considered to be one of the best canaries in a coal mine for detecting global warming in the western United States, appears to be veering toward the brink of extinction in the Great Basin.
New research indicates the small mammals, which are very sensitive to high temperatures, are being pushed upward in their mountain habitat and are running out of places to live. Climate change and human activities appear to be primary factors imperiling the pika, reports University of Washington archaeologist Donald Grayson in the current issue of the Journal of Biogeography.

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