Mountain Caribou 101

Mountain caribou, an ecotype of woodland caribou (Rangifer tarandus), are unique to the Inland Temperate Rainforest and Columbia Mountains of British Columbia and northern Washington and Idaho in the US. Mountain caribou are the southernmost caribou in the world. Other kinds of caribou include the barren-ground caribou of Canada’s far north, and several kinds of reindeer in Europe and Asia.

In early winter before high-elevation snows solidify, mountain caribou are found in low-elevation old-growth cedar and hemlock forests, where 1,000-year-old trees are not uncommon. Here, they feed on ground plants such as falsebox, willow, sedges, and ground lichens. In winter they subsist on arboreal lichens.

Once the mid-winter snow buries those foods, caribou move higher into subalpine spruce/fir forests. Their dinner-plate-sized feet act like snowshoes, allowing them to use the deep winter snow as a platform to reach lichens draped from old-growth trees. Arboreal lichens are their primary food in winter.

Arboreal lichens are found in abundance only in old-growth forests. Older forests also offer protection from predators.

Interesting Facts

  • Caribou survived the Pleistocene Ice Age extinctions that erased mammoths, mastodons, short-faced bears, ice-age camels, and many others after making their way to North America over the Bering Land Bridge thousands of years ago.
  • The declining mountain caribou populations of southern BC are a more distinct breed than scientists previously believed.
  • Mountain caribou are larger than deer and smaller than elk, with males weighing approximately 175 kg. Their hollow fur insulates them through the long mountain winters. Caribou are unique in the deer family in that both females and males grow antlers.
  • Unique behavior allows mountain caribou to live where other ungulates cannot survive.

Facing threats

Mountain caribou are one of the most endangered mammals in North America. A recent census found fewer caribou than thought, with only 1600 remaining of what was once many thousands.

Globally, caribou are now under assault from a variety of human-caused threats, with climate change and tar sands oil mining in the Canadian boreal being the latest. Mountain caribou have adapted to a harsh environment in ways that no other animal can. They are resilient but not invulnerable. They need our help to survive.


Mountain caribou news

We’re calling on Canada and British Columbia to protect southern mountain caribou habitat in B.C. and save our last deep-snow herds. Use our pre-written letter to add your voice to the movement. Logging has no place in the wild and globally significant forests that these iconic animals rely on.Read more 
I’m standing at the edge of a clearcut where a towering ancient cedar and hemlock rainforest used to be. One giant cedar tree remains in the middle, a lonely monument holding the memories of creatures who used to call this place home. Only a year ago, this clearcut was a forest full of life.Read more 
Mountain caribou are struggling to survive. This endangered species is on the decline, with loss of their habitat hurting overall population numbers. Through Wildsight's…Read more 
Deep in the heart of BC’s  Inland Temperate Rainforest a logging plan threatens ancient and globally rare forest in the Seymour River area…Read more 
When a caribou moves, a tendon rolls over bones in its foot creating a unique clicking sound.  A few years ago on a trip…Read more 
Kimberley – B.C. groups are releasing new evidence of ongoing logging and pending cut permits in proposed old growth deferral areas in the province. Images…Read more 
Read more news

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