Mammals

Mountain hare

Lepus timidus

The mountain hare is a hare of cold regions that changes colour with the seasons, turning white in winter to blend into the snow.

Characteristics

Scientific nameLepus timidus
Weight2–5 kg
LifespanFino a 10 anni
SizeLength 45–65 cm
Energy4/5

Temperament

Shy, crepuscular, solitary

Diet

Herbivore: grass, shoots, bark and twigs

Description

The mountain hare is a lagomorph adapted to cold climates, slightly smaller and stockier than the European hare. Its most famous feature is its seasonal moult: in summer it has a greyish-brown coat, while in winter it turns pure white, so as to blend into the snow. The tail stays white all year and the ears are shorter than the European hare's, an adaptation to reduce heat loss.

Habitat and distribution

It lives in the cold regions of the Palearctic, from Scandinavia to Siberia, with isolated populations in the Alps, Ireland and some islands. It frequents tundra, moorland and high-altitude pastures, climbing in summer to above the tree line.

Behaviour and adaptations

Its large hind feet, broad and fur-covered, act like snowshoes and let it move nimbly over the snow. It is a herbivore, feeding on grass, shoots, bark and twigs according to the season. It is mainly active at dusk and by night.

Did you know?

The change in coat colour is governed by day length rather than temperature. With climate warming and increasingly late snowfalls, white hares risk standing out on still-dark ground, exposed to predators.

Conservation

It is classed as least concern, but some populations, such as those in the Alps, are closely monitored. Climate change is the main threat to this snow-dependent species.

Pros

  • Extraordinary seasonal camouflage
  • Perfectly adapted to cold and snow
  • Snowshoe-like feet for moving over the snow

Cons

  • Threatened by climate change
  • White coat exposes it when snow is absent
  • Isolated, vulnerable alpine populations

FAQ

Why does it turn white in winter?
The white coat lets it blend into the snow, escaping predators. The colour change is governed mainly by day length, which signals the approach of the seasons.
How does it differ from the European hare?
It is smaller and stockier, has shorter ears and a completely white tail all year. It also changes colour with the seasons, which the European hare does not.
How does it move on the snow?
Its hind feet are broad and covered with thick fur, acting like snowshoes. This lets it run nimbly over the snow without sinking.
Is it threatened?
Globally it is least concern, but climate warming is a serious threat: if snow comes late, its white coat makes it very visible to predators on dark ground.

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