The gestation period may cover 205 to 337 (average 279) days. Hist. Their eyes open by five weeks of age at which point weaning begins. Range and Habitat: Long-tailed weasels are distributed throughout the state. TWT 2020 Sternberg Museum of Natural History, Fort Hays State University. Hist., 4:1-466. The species continued dispersing rapidly across Kansas and was documented as far south as northeastern Oklahoma in 1988. Long-tailed weasels confine most of their activities to the ground. Some county occurrences indicated below may be too imprecise to map above. They tend to be solitary except during the breeding season and when rearing young. By the fourth week their teeth have erupted. In Kansas, winter pelage in most specimens resembles summer pelage except the fur is longer and more dense. Tulane Studies Zool. (): Choate, J. R., M. D. Engstrom, and R. B. Wilhelm Historical biogeography of the least weasel in Kansas. Many burrows used temporarily by Least Weasels previously were used by the prey animals. Maximum longevity of this mammal is three to four years in the wild, and up to five years in captivity. However, an occasional weasel in northern Kansas has a winter pelage that is pure white or mottled white and brown. Males are much larger than females. Tree squirrels and rabbits are less frequently eaten. Measurements of adult males, followed by measurements of adult females are as follows: total length 347-463 mm, 329-390 mm; length of tail 114-172 mm, 98-147 mm; length of hind foot 36-51 mm, 32-39 mm; length of ear 13-25 mm, 16-24 mm; weight 226-401 g, 130-178 g. The dental formula is incisors 3/3, canines 1/1, premolars 3/3, molars 1/2. (): Hesket, M. G., and E. D. Fleharty Additional records of the least weasel (Mustela nivalis) in Kansas Transactions of the Kansas Academy of Science 68():582-583. Well over half the diet consists of small mammals; voles, deer mice, pocket gophers, ground squirrels, house mice and rats. Trans. Weasels are so small and agile that they fit into the burrows of their small rodent prey, enabling them to hunt day or night and in any season; they can even hunt in the snow! American Midl. Active both night and day throughout the year, Least Weasels investigate holes and burrows searching for prey. Sci., 73:404-406. Their dens often are refurbished from the dens of prey. TWT 2020 Sternberg Museum of Natural History, Fort Hays State University. Remarks: Long-tailed weasels do not appear to be abundant anywhere in Kansas. The nest chambers are approximately 0.3 meters in diameter. Kansas Publ. Univ. The Least Weasel is the smallest member of the Carnivora worldwide. Hall, E. R. American weasels. However, an occasional weasel in northern Kansas has a winter pelage that is pure white or mottled white and brown. (): Bailey, V., and M. R. Terman Update on the least weasel (Mustela nivalis) in Kansas Transactions of the Kansas Academy of Science 89():62-65, Choate, J. R., W. Langley, and V. Bailey The least weasel in southeastern Kansas Prairie Naturalist 20(1):57, Sheffield, S. R., and C. M. King Mustela nivalis Mammalian Species 454():1-10, Hoofer, S. R., and J. R. Choate Updated distribution of the least weasel on the central Great Plains Prairie Naturalist 29(1):1-6. (): Swan, T. Additional records of the least weasel in Kansas Transactions of the Kansas Academy of Science 80():159-160. Longevity of this small mammal is one or two years in the wild. Home ranges increase in size as food becomes less abundant, and are larger in open forests. Long and slender with short legs and bushy tail, the minks build is not unlike that of its closest relatives and two of our most obscure furbearers in Kansas, the least and long-tailed weasels. Trans. The tail is brown tipped with black. On the Great Plains, it was not known to occur south of Nebraska until 1965, when a specimen was trapped in Marshall County. After this time the embryos resume development, and four to nine (usually six to eight) young are born 27 days later. (): Anderson, E. Review of the small carnivores of North America during the last 3.5 million years. Males may average 230 meters per night and females 105 meters per night. Like other weasels, the Long-tailed Weasel has a long, slender body, short legs, a long neck, and a flattened, triangular head. Party band in Kansas City, great for reunions, company celebrations and corporate tailgate parties. Lots of 80's new wave and plenty of variety from the 60's and 70's and 90's and 2000's too! This small mammal tolerates a wide range of habitats, but in the eastern part of Kansas it seems to prefer forest edge and upland prairie grassland, especially if rock outcrops and shrubs are present. Kansas Acad. (): Hall, E. R., and K. R. 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