Two large moose in snow among willows
Bull moose usually shed their antlers in the beginning of winter to help conserve energy and survive the winter.

NPS / Jim Peaco


Moose in Yellowstone are one of four subspecies of moose (Alces alces shirasi) in North America, and are found in forested areas and willow flats from southeastern British Columbia to northern Colorado. They are better adapted to survival in deep snow than other ungulates in Greater Yellowstone. Except during the rut, moose are usually found alone or in small family groups. This behavior, and their use of habitat where they are often well concealed, impedes accurate estimates of population size and distribution. Continue: Moose Description and Population


Quick Facts

Number in Yellowstone

  • Fewer than 200
  • Population has declined in last 40 years due to loss of old growth forests surrounding the park, hunting outside the park, burning of habitat, and predators.

Where to See

  • Marshy areas of meadows, lake shores, and along rivers.

Behavior and Size

  • Adult male (bull) weighs close to 1,000 pounds; female (cow) weighs up to 900 pounds; 5½ to 7½ feet at the shoulder. Young weigh 25–35 pounds at birth.
  • Usually alone or in small family groups.
  • Mating season peaks in late September and early October; one or two calves born in late May or June.
  • Lives up to 20 years.

More Information

Contact the Park

Mailing Address:

P.O. Box 168
Yellowstone National Park, WY 82190-0168


(307) 344-7381
Recorded information. For road and weather information, please dial 307-344-2117.

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