Description
The Vancouver Island marmot is typical of alpine-dwelling marmots in general form and physiology. However this species can be easily distinguished from other marmots by its rich, chocolate brown fur and contrasting white patches. No other marmot species naturally occurs on Vancouver Island. The Vancouver Island marmot, as its name suggests, is geographically restricted to Vancouver Island, and apparently evolved rapidly since retreat of the Cordilleran glaciation some 10,000 years before present. Marmota vancouverensis is distinct from other marmot species in terms of morphology, genetics, behaviour, and ecology.
An adult Vancouver Island marmot typically measures 65 to 70 centimetres from the tip of its nose to the tip of its tail. (Picture holding a large housecat.) However, weights show tremendous seasonal variation. An adult female that weighs 3 kilograms when she emerges from hibernation in late April can weigh 4.5 to 5.5 kg by the onset of hibernation in late September or October. Adult males can be even larger, reaching weights of over 7 kg. In general, marmots lose about one-third of their body mass during the six-and-a-half months in which they hibernate during winter.
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