The diet composition and proportion of the pine marten changes according to season and local conditions as they respond to unpredictable rodent booms and seasonally available fruits and berries.
The diet composition and proportion of the pine marten often changes according to season and local conditions.
Populations respond to the unpredictable cycles of rodents, such as voles, by drastically increasing their consumption of these prey items. The reproductive characteristics of the pine marten prevents it from closely tracking the rodent cycles, however, as a population increase is seen a full year after a rodent boom.
Aside from the effects of seasonally available fruits and unpredictable rodent booms, the diet of the pine marten is otherwise reasonably constant.