A pine marten, captured by a wildlife camera, bounds across the snow.

There’s a killer in the woods, but only small mammals need worry.

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A crew installs one of the next-gen monitoring stations on open space on Independence Pass in September.

Measuring the amount of water contained in Colorado’s largest natural reservoir is not an exact science, but the U.S. Geological Survey intends to help improve estimates. Pitkin County’s open spaces will help.

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Townsend’s long-eared bats circle in the caged entrance to a mine in the Crystal Valley.

In the Crystal River Valley, summer nights draw nocturnal predators into the open. One such species takes to the skies by the hundreds in a spectacle that is rarely witnessed.

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