Jeff Foott / American Pika (Ochotona princeps) carrying plants for hay pile, Bridger-Teton National Forest, Wyoming

Jeff Foott / American Pika (Ochotona princeps) carrying plants for hay pile, Bridger-Teton National Forest, Wyoming

Jed Weingarten / Wild Wonders of China / Large-eared pika (Ochotona macrotis) Serxu County, Garze Prefecture, Sichuan Province, China.

Chase Dekker / Collared Pika (Ochotona collaris) feeding on grass, Denali National Park, Alaska

Hermann Brehm / Pallas's Pika (Ochotona pallasi) Altai, Mongolia

Nick Garbutt / Royle's pika (Ochotona roylei) on a rocky slope. Himalayas, Ladakh, northern India.

Nick Garbutt / Royle's pika (Ochotona roylei) on a rocky slope. Himalayas, Ladakh, northern India.

Douglas Herr/ BIA / Collared Pika (Ochotona collaris), Alaska

Jeff Foott / Pika (Ochotona princeps) in Bridger National Forest, Wyoming Mountain Range, Wyoming, USA, June.

Jeff Foott / Pika (Ochotona princeps)on hay pile, in Bridger National Forest, Wyoming Mountain Range, Wyoming, USA, June.

Jeff Foott / Pika (Ochotona princeps) in Bridger National Forest, Wyoming Mountain Range, Wyoming, USA, July.

Jeff Foott / Pika, (Ochotona princeps) bringing vegetation to Hay pile, in Bridger National Forest, Wyoming, USA, July.