Alva Review-Courier -

POWELL, Wyo. (AP) — One Monday before sunrise, Wyoming Game and Fish biologist Leslie Schreiber was stationed at a small campground 5 miles off the highway on a dusty dirt road east of Lovell. A stiff breeze made the low temperatures uncomfortable, stinging Schreiber's cheeks and fingers, but she was pleased with the cold weather.

Bighorn sheep overheat when they're stressed — and being netted and transported on the end of a tether by helicopter causes a lot of stress.

When a school bus carrying some of Wendy Smith's students from Powell High School arrived in the sheep transition area, Schrei...