Behavior
Studies have shown that the diet of the mountain hare varies from region to region. It seems to be somewhat dependent on the particular habitat that the population under study lives in. For example, in northern Scandinavia where snow may blanket the ground for many months, the hares may graze on twigs and bark. In areas where snowfall is rare, such as Ireland, grass may form the bulk of the diet. Given a choice, mountain hares in Scotland and Ireland seem to prefer feeding on grasses. One study looking at mountain hares on a coastal grassland environment in Ireland found that grasses constituted over 90% of the diet. This was higher than the percentage of grass in the diet of the European rabbit (Oryctolagus cuniculus) that inhabited the same environment. The Mountain Hare is regionally the favorite prey of the Golden Eagle and may additionally be predated by Eurasian Eagle-Owls and Red Foxes. Stoats may prey on young hares.
In northern parts of Finland, Norway and Sweden, the mountain hare and the European hare compete for habitat. The European hare, being larger, is usually able to drive away the mountain hare but is less adapted for living in snowy regions: its feet are smaller and its winter fur is a mixture of white and brown. While this winter fur is actually a very good camouflage in the coastal regions of Finland where the snow covers the shrubs but for a short time, the mountain hare is better adapted for the snowier conditions of the inland areas.
The arctic hare (Lepus arcticus) was once considered a subspecies of the mountain hare, but it is now regarded as a separate species. Similarly, some scientists believe that the Irish Hare should be regarded as a separate species. Fifteen subspecies are currently recognised .
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