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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 muskrat or common muskrat [1] (Ondatra zibethicus) is a medium-sized semiaquatic rodent native to North America and an introduced species in parts of Europe, Asia, and South America. Quick Facts Conservation status, Scientific classification ...
Very precocial birds can be ready to leave the nest in a short period of time following hatching (e.g. 24 hours). Many precocial chicks are not independent in thermoregulation (the ability to regulate their body temperatures), and they depend on the attending parent(s) to brood them with body heat for a short time. Precocial birds find their ...
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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 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 ...