The plight of the pika: Critters retreating to even higher elevations inside Yosemite

The American pika is shown in its habitat in Yosemite National Park. Beth Pratt-Bergstrom, who has researched the American pika, said if people want to learn more, they can look up a film called the “Adventures of the American Pika,” which has several clips of the small animals. “The clips online are definitely worth seeing,” Pratt-Bergstrom said. Submitted photo

Editor’s note: This is the second in a two-part series featuring Beth Pratt-Bergstrom, the California director of the National Wild...

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