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Even though the Siberian chipmunk normally grows to 50–150 g (1.8–5.3 oz). [3] [5] The Siberian chipmunk does not exhibit sexual dimorphism, and size and body proportions are the only way to distinguish younger chipmunks from older ones. [4] Its small size may contribute to its relatively short life from two to five years in the wild.
Chipmunks are classified as four genera: Tamias, of which the eastern chipmunk (T. striatus) is the only living member; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; Nototamias, which consists of three extinct species, and Neotamias, which includes the 23 remaining, mostly western North American, species.
The article did say chipmunks eat plants from vegetable gardens, but these are not items of a wild diet, and grass and shoots are more typical items of diet as can be seen above (and vegetables is a vague word, especially in such a place as an example of a 'form of plant matter'); the Massachusetts Audubon article is unclear and is not needed ...
Caged Tamias chipmunk, Tokyo area. The genus Tamias was formerly divided into three subgenera that, in sum, included all chipmunk species: Tamias, the eastern chipmunk and other fossil species; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; and Neotamias, which includes the 23 remaining, mostly western ...
Eutamias is a genus of chipmunks within the tribe Marmotini of the squirrel family. It includes a single living species, the Siberian chipmunk (Eutamias sibiricus).The genus is often treated as a subgenus of Tamias, which is now restricted to the eastern chipmunk of North America. [1]
During the winter, the chipmunk may enter long periods of hibernation. [22] Predators of the eastern chipmunk include hawks, owls, foxes, raccoons, snakes, weasels, coyotes, bobcats, lynx, domestic dogs and domestic cats. On average, eastern chipmunks live three or more years in the wild, but in captivity they may live as long as eight years. [16]
With less fish to eat, grizzly bears began to eat more elk calves, causing a steep decline in elk numbers. [13] [14] More than 30,000 elk from 7-8 different herds summer in Yellowstone and approximately 15,000 to 22,000 winter in the park.
In the taiga forests, species include squirrels, chipmunks, voles and lemmings. The carnivores are polecats, brown bear, lynx, wolves, foxes, wolverines and the sable. Elk, a large deer about 2 metres (6 ft 7 in) in height up to the shoulder, are common in this habitat. [6] Steppe animals include wild boar as well as 30 other mammal species.