The pine marten was once quite common throughout Britain.
Now it is uncommon and found mainly in remote forests or sometimes on
rocky moorland where it spends quite a lot of time on the ground looking
for food in forest rides and grassy areas. Prime habitats
for pine martens seem to be well wooded areas, with high densities of
voles that are their principal prey. Martens have a very varied diet, which
changes with the seasonal availability of different foods. Small rodents
are a very important food, but birds, beetles, carrion, eggs and fungi
are also eaten. In autumn, berries are a staple part of the diet. Martens
mostly hunt on the ground, although they are superb climbers and extremely
agile.
Recognition:
Dark brown fur with a yellow/white throat patch and a long
fluffy tail.
Head/body length: males 51-54cm; females 46-54cm;
Tail length: males 26-27cm; females 18-24cm.
Weight: males 1.5-2.2kg;
females 0.9-1.5kg
Biology:
Pine Martens breed once a year, mating in July or August.
But there is a delay in the implantation of the fertilised egg, and females
do not become pregnant until about January. A litter averages three
babies, born in March or April in a den usually in a crevice in the rocks
or tree roots. The young spend at least six weeks in the den before their
eyes open and they are big enough to venture out, and the family stays
together until they are about six months old. The youngsters grow quickly
and reach adult size in their first summer, but until their first winter
moult they have a paler, woollier fur than their parents. Female
pine martens with young are extremely sensitive to human disturbance,
which can cause a female to
move her young from a den or even eat them. Pine martens have lived up
to 17 years in captivity
Martens have territories that vary in size according to habitat and food
availability. For males these are about 10-25 square kilometres and for
females about 5-15 square kilometres. Martens mark their territories with
faeces (known as scats) deposited in places where they are conspicuous
to other martens; they are frequently left along forestry trails.
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