1. Two bighorn sheep butting heads on a rocky cliff at the National Elk Refuge.

    Two bighorn sheep butting heads at the National Elk Refuge, Wyoming. April,…

    Published on July 4, 2019

  2. A bighorn sheep ewe and lamb standing on the National Elk Refuge road.

    Bighorn Sheep, National Elk Refuge, Wyoming. February, 2019.

    Published on June 10, 2019

  3. A close-up of a cute little bighorn sheep lamb looking straight at the camera.

    Bighorn Sheep, National Elk Refuge, Wyoming. February, 2019.

    Published on June 9, 2019

  4. A bighorn sheep ram scrambling on a rock outcropping at Millers Butte in the National Elk Refuge.

    Bighorn Sheep on Millers Butte, National Elk Refuge. January, 2019.

    Published on June 9, 2019

  5. A coyote sitting and staring at the camera, on Millers Butte at the National Elk Refuge.

    Coyote, National Elk Refuge, Wyoming. January, 2019.

    Published on May 30, 2019

  6. National Elk Refuge road covered in snow, with the north end of Millers Butte in the distance.

    National Elk Refuge, Wyoming. January, 2019.

    Published on May 30, 2019

  7. A bighorn sheep ewe with a lamb, resting at the top of a rock at Millers Butte, in the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. January, 2019.

    Published on May 29, 2019

  8. A bighorn sheep lamb scrambling at the top of a ridge at Millers Butte, at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. January, 2019.

    Published on May 29, 2019

  9. Side view of a bighorn sheep doing the flehmen response, at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. January, 2019.

    Published on May 26, 2019

  10. A close-up of a bighorn sheep ram standing in the snow at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. January, 2019.

    Published on May 26, 2019

  11. Four bighorn sheep huddling on the road at the National Elk Refuge, with Millers Butte in the background.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on May 13, 2019

  12. Two bighorn sheep rams standing on a ridge at the top of Millers Butter at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on May 8, 2019

  13. Three bighorn sheep rams posturing on a hillside at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on May 8, 2019

  14. A bighorn sheep ewe standing on the side of the road at the National Elk Refuge, with Jackson and the East Gros Ventre Butte in the background.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on May 7, 2019

  15. A bighorn sheep lamb standing next to an ewe at the National Elk Refuge. The lamb is looking towards the camera, and the ewe is looking away.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 30, 2019

  16. A bighorn sheep lamb standing on the road at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 30, 2019

  17. A close-up of a bighorn sheep ram's face, at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 29, 2019

  18. Two bighorn sheep rams walking along the road at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 29, 2019

  19. A bighorn sheep laying down on the snow with her legs folded under her, at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 28, 2019

  20. A bighorn sheep standing at the top of a rocky, snow-covered ridge at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 28, 2019

  21. A bighorn sheep walking along the top of a snow-covered ridge at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 27, 2019

  22. A bighorn sheep standing at the top of a rock at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 27, 2019

  23. A little bighorn sheep lamb eating grass on a hill at the National Elk Refuge, while an ewe looks in the other direction.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 22, 2019

  24. A little bighorn sheep lamb standing on a rock outcropping at the National Elk Refuge.

    Bighorn Sheep, National Elk Refuge, Wyoming. December, 2018.

    Published on April 22, 2019