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Beech marten

life science Maturity 7-9 Next article →

The beech marten (Martes foina) is a highly adaptable mustelid found across Europe and Central Asia. It is also known by several other names, including the stone marten, house marten, or white-breasted marten. Because it has a very wide distribution and a large population, the IUCN Red List classifies the species as Least Concern. While it may look similar to the European pine marten, the beech marten is much more of a generalist. This means it can survive in many different types of environments, ranging from forests to open habitats.

Martes foina 1 (Bohuš Číčel)
Martes foina 1 (Bohuš Číčel)

Evolutionary history suggests that the beech marten descended from an ancestor called Martes vetus. The earliest fossils of Martes vetus were discovered in deposits from the Würm glaciation in Lebanon and Israel. Scientists believe the beech marten likely originated in the Near East or southwestern Asia. It may have migrated into Europe during the Late Pleistocene or the early Holocene. Fossil evidence shows that the beech marten began to decrease in size during the Würm period. Its skull also changed over time to support hypercarnivory, which is a diet consisting mostly of meat. This adaptation included a smaller head, a shorter snout, and a narrower post-orbital constriction.

Martes foina 03 MWNH 849
Martes foina 03 MWNH 849

Physically, the beech marten has several distinct features that separate it from its relatives. It has an elongated body and short legs, which allow it to creep through narrow spaces. Unlike the pine marten, which moves by leaping or bounding, the beech marten moves by creeping in a polecat-like manner. Its ears are shorter, more rounded, and more widely spaced than those of the pine marten. The beech marten also has a lighter-colored nose, often described as peach or grey. A very noticeable feature is the white throat patch, which is always present. This patch is often large and features two projections that extend toward the legs.

Beechmartenmarkings
Beechmartenmarkings

There are eleven recognized subspecies of the beech marten, each with unique traits. The European beech marten (Martes f. foina) is the nominate subspecies and has an average-sized skull. In the winter, its back can range from light greyish tawny to dark brown. The Caucasian beech marten (Martes f. nehringi) is a much larger subspecies with a massive skull. In the Aegean Islands, there are relic populations that show primitive Asiatic affinities. Other subspecies include the Iberian beech marten, which is a lighter and less drab form, and the Middle Asian beech marten, which has lighter fur and a very variable throat patch.

Martesfoina
Martesfoina

Size and weight vary between the sexes and the seasons. Adult males typically measure between 430 and 590 mm in body length. Females are generally smaller, measuring between 380 and 470 mm. In the winter, males weigh between 1.7 and 1.8 kg, while in the summer, they can reach 2 to 2.1 kg. Females are lighter, weighing between 1.1 and 1.3 kg in winter and 1.4 to 1.5 kg in summer. The tail length also differs, with males reaching up to 320 mm and females up to 275 mm.

Martes foina 1 (Bohuš Číčel)
Martes foina 1 (Bohuš Číčel)

The beech marten is a crepuscular and nocturnal animal, meaning it is most active at dawn, dusk, and during the night. It is especially active on moonlit nights. While it is a skilled climber, it is more terrestrial than the pine marten and often hunts on the ground. It is also a capable swimmer. Because its feet carry a heavy load—about 30.9 g per square centimeter—it must avoid deep snow. During heavy snowfalls, it often follows paths made by hares or skiers. For shelter, it does not dig burrows. Instead, it uses rock fissures, stone structures, or even tree holes up to 9 metres high. In urban areas, it frequently nests inside buildings.

Martes foina litter 7
Martes foina litter 7

The diet of the beech marten is quite diverse, especially compared to the pine marten. It eats many types of plant food, such as cherries, apples, pears, plums, and grapes. These plant foods are especially important during the winter months. It also hunts animals like rats, mice, and various bird species. It is known to raid nests to eat both fledglings and adult birds. While it can be a specialized poultry raider, it usually hunts wild prey. This varied diet helps the beech marten occupy a different ecological niche than the pine marten, which focuses more on birds and rodents.

Fainavslontra
Fainavslontra
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🖼️ Images & Media (7)
File:Martes foina 1 (Bohuš Číčel).jpg
Martes foina 1 (Bohuš Číčel).jpg
File:Martesfoina.png
Martesfoina.png
File:Beechmartenmarkings.png
Beechmartenmarkings.png
Martes_foina-(drkb)-1.webm
File:Martes foina 03 MWNH 849.jpg
Martes foina 03 MWNH 849.jpg
File:Martes foina litter 7.jpg
Martes foina litter 7.jpg
File:Fainavslontra.png
Fainavslontra.png
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