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Concept
Chipmunk
Summary
Chipmunks are small, striped rodents of the family Sciuridae. Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia.
Chipmunks may be classified either as a single genus, Tamias, or as three 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; and Neotamias, which includes the 23 remaining, mostly western North American, species. These classifications were treated as subgenera due to the chipmunks' morphological similarities.
As a result, most taxonomies over the twentieth century have placed the chipmunks into a single genus. However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic differences between Marmota and Spermophilus, so the three genera classifications have been adopted here.
Tamias striatus2.jpg|''[[Tamias striatus]]'', Eastern chipmunk
Streifenhoernchen.jpg|''[[Eutamias sibiricus]]'', Siberian chipmunk
Tamias minimus.jpg|''[[Neotamias minimus]]'', Least chipmunk
The common name originally may have been spelled "chitmunk", from the native Odawa (Ottawa) word jidmoonh, meaning "red squirrel" (cf. Ojibwe ᐊᒋᑕᒨ ajidamoo). The earliest form cited in the Oxford English Dictionary is "chipmonk", from 1842. Other early forms include "chipmuck" and "chipminck", and in the 1830s they were also referred to as "chip squirrels", probably in reference to the sound they make. In the mid-19th century, John James Audubon and his sons included a lithograph of the chipmunk in their Viviparous Quadrupeds of North America, calling it the "chipping squirrel [or] hackee". Chipmunks have also been referred to as "ground squirrels" (although the name "ground squirrel" may refer to other squirrels, such as those of the genus Spermophilus).
Chipmunks have an omnivorous diet primarily consisting of seeds, nuts and other fruits, and buds.
Official source
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