Frances Cassirer, 43, an Idaho Fish and Game research biologist who has been studying Rocky Mountain bighorn sheep for six years, collects scat samples downstream of Pittsburgh Landing on the Idaho side, above the Snake River, to determine how nutrition affects the herds' health, Oct. 10, 2002. She is six years through a 10-year project to restore bighorn populations in Hells Canyon. "We owe it to the sheep," she says.
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