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Muskrat skeleton Muskrat skull An adult muskrat is about 40–70 cm (16–28 in) long, half of that length being the tail, and weighs 0.6–2 kg ( 1 + 1 ⁄ 4 – 4 + 1 ⁄ 2 lb). [ 13 ] That is about four times the weight of the brown rat ( Rattus norvegicus ), though an adult muskrat is only slightly longer.
The round-tailed muskrat is a semiaquatic and nocturnal species native to the southeastern United States. [3] Limited sexual dimorphism is seen among round-tailed muskrats, with female adults weighing an average of 262 grams (9.2 oz) and male adults measuring at a slightly heavier average of 279 grams (9.8 oz). [3]
The round-tailed muskrat (N. alleni) is only found in Florida and adjacent Georgia, just outside of the range of O. zibethicus. Some authorities place both genera in different tribes (Ondatrini for Ondatra , Neofibrini for Neofiber ), but the American Society of Mammalogists places both in Ondatrini, and some molecular evidence supports a close ...
The refuge also has an area where bald eagles have been nesting in recent years. [9] Ducks and geese, including Canada geese, snow geese, black ducks and mallards are common at the refuge. [8] Sunrise over Knox Marsh. Mammalian species that roam this refuge include raccoon, coyote, muskrat, squirrel, red fox, chipmunk, beaver, gray fox and bats ...
The American mink may nest in burrows dug previously by muskrats, badgers and skunks, and may also dig dens in old ant hills. The nesting chamber is at the end of a four-inch tunnel, and is about a foot in diameter. It is warm, dry, and lined with straw and feathers. [21]
Muskrat French, an ethnic group in Michigan, the United States; Muskrat Root, a type of fragrant herb; Muskrat Scrambler, a roller coaster in New Orleans, the United States; Muskrat v. United States, a 1911 legal case concerning sale of Native American lands; Winnipesaukee Muskrats, a baseball team in New Hampshire, the United States
Each species of pack rat is generally restricted to a given type of habitat within its range. Pack rats live anywhere from low, hot, dry deserts to cold, rocky slopes above timberline. Pack rats build complex houses or dens made of twigs, cactus joints, and other materials. These contain several nest chambers, food caches, and debris piles.
The term colony has also been applied, perhaps misleadingly, to smaller nesting groups, such as forest-dwelling species that nest socially in a suitable stand of trees. The red-cockaded woodpecker , an endangered species of southeastern North America, is a social species that feeds and roosts in family groups, or clans.