Bighorn sheep (IMAGE)

S.J. & Jessie E. Quinney College of Natural Resources, Utah State University

Bighorn sheep

Caption

Sierra Nevada bighorn sheep make a tough choice every winter—to remain cold, hungry, and relatively safe from predators at high elevations, or to drop down to more temperate and more risky low-elevation ranges. New research explores the strategies they use to arrive at a decision.

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Photo by Ming Poon

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Attribute to Ming Poon

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