![]() ![]() ![]() Life history traits (averages) Female sexual maturity 162 days Male sexual maturity 365 days Gestation 25 days Weaning 37 days Litter size 6.2 (viviparous) Litters per year 1 Inter-litter interval 365 days Weight at birth 3.1 g Weight at weaning 34.6 g Adult weight 150.6 g Postnatal growth rate Maximum longevity residual 83% Metabolism Typical body temperature 312ºK or 39.0✬ or 102.2✯ Basal metabolic rate 1.3440 W Body mass 225.0 g Metabolic rate per body mass 0. Maximum longevity could be slightly underestimated, though. Browse Getty Images premium collection of high-quality, authentic Long Tailed Weasel stock photos, royalty-free images, and pictures. One specimen lived 8.8 years in captivity. Males first mate when they are about one year of age. ![]() 671 Sample size Tiny Data quality Acceptable Observations Short-tailed Weasel has white line down inside of leg and is smaller. Species Mustela frenata Common name Long-tailed weasel Lifespan, ageing, and relevant traits Maximum longevity 8.8 years (captivity) Source ref. However, shifting climate conditions, such as shortened periods of time with snow cover, are changing the game, and these molting patterns are increasingly maladaptive for some populations.AnAge entry for Mustela frenata Classification (HAGRID: 02195) Taxonomy Kingdom: Animalia Although they sometimes are considered to be nocturnal, they are often active during the daylight hours. This is a delicately timed process: it wouldn’t do to shed all hair at once and be bald right before winter, nor would it help to change too early, and changing too late could also result in disastrous outcomes. Long-tailed weasels are active throughout the year. Research has shown that, for mammals, change in photoperiod, the proportion of light to dark in a day, triggers changes in the hormones involved in gradual hair shedding and regrowth as well as pigment production. Aside from the long-tailed weasel, there are only three other predators that undergo a seasonal coat color change: the least weasel, the stoat (a weasel relative), and the arctic fox. The function of the trait is to camouflage the individual during the season that is most common. This fascinating phenomenon has been documented in over 20 bird and mammal species, and primarily in prey. The long tailed weasel is much the same in color as the short tailed weasel except that, in some areas, it does not become white in winter. Svendsen (1982) indicated that summer home ranges of. T he long-tailed weasel exhibits seasonal coat color changes, with the buff or cinnamon colored upper body changing to all white in late autumn, and back again in mid-spring. Snow-tracking studies of long-tailed weasels have revealed home ranges of 32160 ha (Quick 1944, 1951). The long-tailed weasel is the larger and more widely. It would be accurate to call this weasel an all-terrain predator: it can run on land, swim, climb trees, or burrow into snow, but the long-tailed weasel may find itself the meal of predators such as coyotes and bobcats. There are two species of weasels in North Carolina, the least weasel and the long-tailed weasel. It may sometimes take prey larger than itself, such as rabbits or chickens. BEHAVIORS The long-tailed weasel may be found statewide in Illinois. Some long-tailed weasels become white in the winter except for their black tail tip. The body fur is red-brown with orange or white belly fur. ![]() Its black-tipped tail is three to six inches long. Primarily dining on other mammals such as voles, the long-tailed weasel will also eat birds, eggs, reptiles, fish, insects, and even worms if need be. The long-tailed weasel has a head-body length of about eight to 10 inches. They are skilled hunters both above and below snow level and have been common in our area for about 2 million years, thriving during the repeating Ice Ages, including the Pleistocene Ice Age when glaciers were forming the bog here at SHADOW. Of all the Mustelids, the weasel family, the long-tailed weasel is the most general in its prey choice and is a highly successful species. The long-tailed weasel prefers open habitats, such as meadows, fields, or tundra, and is adapted to climates where thick snow fall is common. ![]()
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