The pika (Ochotona princeps) is considered an indicator species for detecting ecological effects of climate change. While abundant in the Greater Yellowstone Ecosystem, pika numbers are declining in some areas of lower elevations in response to increased warming, which reduces their suitable habitat. While the recent US Fish and Wildlife Service review of the pika found no current need to list the species as threatened or endangered, pikas will likely disappear from some lower elevation or warmer sites. Learn More: Pika Behavior and Research...
Number in Yellowstone
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Pikas are vulnerable to loss of habitat related to climate change.