Stone marten
- The beech marten is the only member of its genus and does not live exclusively in forests. It prefers open areas with shrubs and rocks.
- The beech marten gives birth to three or four young, which are blind and naked at first. Eight months pass between mating and birth, and the gestation period lasts only one month.
- The beech marten's mating occurs during the summer months from June to August, but due to the conservation of sperm in the female's body, the offspring are born in spring, from March to April.
- The beech marten's neck patch may be absent in some Asian populations. These animals have gray-brown, stiff fur.
Age
The European pine marten, also known as a beech marten or house marten, has a typical lifespan ranging from 13 years and 8 months to 22 years and 9 months, with a maximum lifespan of 18 years and 3 months, while its theoretical lifespan is between 9 years and 1 month and 16 years and 5 months; the species reaches sexual maturity at an age of 1 to 2 years. During the "Embryo" stage, the fetus develops inside the mother, and pregnancy lasts for a prolonged period. The "Young" stage begins when the young’s eyes open between 3 weeks and 1 month and 1 week; the young are born blind and hairless, and the mother feeds them milk in a den for a duration of 1 day to 1 month and 3 weeks. The "Adult" stage commences at an age of 1 to 11 years, during which the species hunts independently and lives separately, with males being larger than females.
Phenotype
The Caucasian sable is a species possessing dense fur of a brown color, which protects from the cold, and a white spot is always present on the chest and throat. Sharp claws help adult individuals climb trees and cliffs and catch prey, while sharp teeth allow biting and tearing food. A long and fluffy tail helps maintain balance during jumps and climbing. The eyes of the cubs open approximately 1 month after birth.
Physiology
The European pine marten’s body height ranges from 17.8 centimeters to 3.5 meters, with a body length from 40 to 55 centimeters and a weight from 1.3 kilograms; the embryonic stage has a body mass from 1 to 25 grams and a body length from 1 millimeter to 5 centimeters, while the young have a body mass from 25 to 150 grams and a body length from 10 to 20 centimeters; an adult individual’s body mass ranges from 1.3 to 1.8 kilograms and its body length is from 40 to 50 centimeters.
Habitat
The European pine marten inhabits land and forest landscapes, including rocky areas and forests, at elevations up to 2.5 kilometers; the species thrives in temperate mixed forests with warm summers and many oaks, birches, and maples, as well as flooded meadows where water frequently covers the ground and there is abundant grass, and taiga characterized by cold winters and numerous coniferous trees such as fir and pine; the climate is consistently very wet with frequent rain and high humidity, and summers are often cool and rainy with snow in winter, though some areas experience warm summers and many rains, or simply warm summers and mild winters, with pleasant summers averaging between 20 and 25 degrees Celsius.
Shelter
The European pine marten resides in rocks, trees, and buildings, utilizing dens for shelter. These dens serve multiple purposes, including hibernation, reproduction, rest, and protection from sunlight. The species constructs its dens using berries.
Geography
The European pine marten occupies the Palearctic biogeographical region and is found in several distinct ecosystems, including Celtic broadleaf forests, broadleaf forests of Western Europe, coniferous forests of the Qilian Mountains, Balkan mixed forests, Baltic mixed forests, and European Atlantic mixed forests.
Feeding
The stone marten is an omnivorous species that catches small animals and consumes plant matter, foraging for food through active hunting, searching, and pursuing prey. Its diet includes rodents, birds, eggs, insects, berries, fruits, and seeds; specifically, it preys on pigeons, turtledoves, squirrels, grey partridges, wall lizards, brown frogs, chipmunks, and other small animals. The species hunts at night and gathers fruits, with a daily food requirement ranging from 100 grams to 250 grams. Eagles prey on the stone marten.
Reproduction
Embryonic development is 4 weeks. Litter size is 2–6. Maturity occurs from 1 to 2 years. Offspring are 2–6. Mating occurs in summer. Due to delayed development, young are born in spring. The mother cares for them alone. The reproductive interval is 1 year. They inhabit and develop on land, outside of water bodies. Eggs, or young develop in a nest built on the ground or close to it. The nest is hidden in an underground burrow. A caring mother—the nest is hidden in an underground burrow, only the mother shows parental care for the offspring. In tree cavities and caves—the nest is inside the trunk of a tree or in a cave/crevice, both parents show some care. A caring father—the nest is inside the trunk of a tree or in a cave/crevice, only the father shows parental care for the offspring. Live birth—young are born live on land, they do not hatch from eggs or larvae. Ordinary sexual—homogamy, reproduction always with fertilization, without alternation of generations.