Two bull moose lock antlers


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. Although some moose in Yellowstone migrate to lower elevations in winter, others move to higher elevations where they can browse beneath a mature forest canopy that reduces snow accumulation. 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. Learn More: Moose Information Continued...

Quick Facts about Moose in Yellowstone

  • Fewer than 200 in Yellowstone.
  • 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.
  • Seen in marshy areas of meadows, lake shores, and along rivers.
  • Adult male (bull) weighs close to 1,000 pounds; female (cow) weighs up to 900 pounds; 5½to 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.

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