Yellowstone National Park, January 2019: Bighorns in the Lamar Valley, Yellowstone National Park, January 30, 2019. One ram, two ewes (one with locator collar), and one lamb. [#9756-9277] Click on image for next photo.

Bighorns in the Lamar Valley, Yellowstone National Park, January 30, 2019.  One ram, two ewes (one with locator collar), and one lamb.  Click for next photo.

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All photos 1998-2019 by Thomas O'Neil