1. 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

  2. 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

  3. A bull moose walking on a snow-covered field along the Gros Ventre Road.

    Moose, Gros Ventre Road, Grand Teton National Park. January, 2019.

    Published on May 25, 2019

  4. A bull moose walking in the snow along the Gros Ventre Road, with Blacktail Butte in the background.

    Moose, Gros Ventre Road, Grand Teton National Park. January, 2019.

    Published on May 25, 2019

  5. A bison standing on the brush at Antelope Flats, looking at the camera.

    Bison, Antelope Flats, Grand Teton National Park. January, 2019.

    Published on May 24, 2019

  6. A bison standing next to Antelope Flats road, looking towards the distance.

    Bison, Antelope Flats, Grand Teton National Park. January, 2019.

    Published on May 24, 2019

  7. A bull moose standing in the brush at Antelope Flats while it snows.

    Moose, Antelope Flats, Grand Teton National Park. January, 2019.

    Published on May 23, 2019

  8. A squirrel standing on a branch of a pine tree on the trail leading towards Taggart Lake.

    Squirrel, Taggart Lake Trail, Grand Teton National Park. January, 2019.

    Published on May 23, 2019

  9. A close-up of a snow-covered Mount Moran in winter.

    Mount Moran, Grand Teton National Park. January, 2019.

    Published on May 22, 2019

  10. A bull moose looking towards the distance, facing away from the camera.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 19, 2019

  11. Close-up of the side of a bull moose's face.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 19, 2019

  12. A bull moose standing on the sagebrush at Antelope Flats and looking straight at the camera with his mouth partially open, as if smiling.

    Bull Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 18, 2019

  13. A bull moose standing on the sagebrush at Antelope Flats.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 18, 2019

  14. A bull moose walking among the sagebrush at Antelope Flats.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 17, 2019

  15. A large bull moose standing in the brush at Antelope Flats while it snows.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 17, 2019

  16. A bull moose standing on Antelope Flats while it snows.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 16, 2019

  17. A bull moose standing on a snow-covered service road on Antelope Flats.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 16, 2019

  18. Two bull moose facing off while sparring near the Kelly Warm Spring in Grand Teton National Park.

    Moose sparring on Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 15, 2019

  19. Two bull moose facing off while sparring near the Kelly Warm Spring, Grand Teton National Park.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 15, 2019

  20. A bull moose looking to his side at Antelope Flats.

    Moose, Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 14, 2019

  21. Two bull moose locking antlers while sparring on Antelope Flats.

    Moose sparring on Antelope Flats, Grand Teton National Park. December, 2018.

    Published on May 14, 2019

  22. Two bison standing next to each other in the snow, at Elk Ranch Flats.

    Bison, Elk Ranch Flats, Grand Teton National Park. December, 2018.

    Published on May 12, 2019

  23. Two bison next to each other on the snow at Elk Ranch Flats.

    Bison, Elk Ranch Flats, Grand Teton National Park. December, 2018.

    Published on May 12, 2019

  24. A bison lying down in the snow next to a fence at the Elk Ranch Flats.

    Bison, Elk Ranch Flats, Grand Teton National Park. December, 2018.

    Published on May 11, 2019