The eastern chipmunk (''Tamias striatus'') is a
chipmunk
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.
Taxonomy and systematics
Chipmunks may be classified either as ...
species found in eastern
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
. It is the only living member of the
chipmunk
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.
Taxonomy and systematics
Chipmunks may be classified either as ...
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''Tamias''.
Etymology
The name "chipmunk" comes from the
Ojibwe
The Ojibwe, Ojibwa, Chippewa, or Saulteaux are an Anishinaabe people in what is currently southern Canada, the northern Midwestern United States, and Northern Plains.
According to the U.S. census, in the United States Ojibwe people are one of ...
word ''ajidamoo'' (or possibly ''ajidamoonh'', the same word in the
Ottawa dialect
The Ottawa, also known as the Odawa dialect of the Ojibwe language is spoken by the Ottawa people in southern Ontario in Canada, and northern Michigan in the United States. Descendants of migrant Ottawa speakers live in Kansas and Oklahoma. Th ...
of Ojibwe), which translates literally as "one who descends trees headlong." First described by
Mark Catesby
Mark Catesby (24 March 1683 – 23 December 1749) was an English naturalist who studied the flora and fauna of the New World. Between 1729 and 1747 Catesby published his ''Natural History of Carolina, Florida and the Bahama Islands'', the fi ...
in his 1743 ''The Natural History of Carolina, Florida, and the Bahama Islands'', the chipmunk was eventually classified as ''Sciurus striatus'' by
Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...
, meaning "striped squirrel" in Latin. The scientific name was changed to ''Tamias striatus'', meaning "striped steward," by
Johann Illiger in 1811.
Description
A small species, it reaches about in length including the tail, and a weight of . It has reddish-brown fur on its upper body and five dark brown stripes contrasting with light brown stripes along its back, ending in a dark tail. It has lighter fur on the lower part of its body. It has a tawny stripe that runs from its whiskers to below its ears, and light stripes over its eyes. It has two fewer teeth than other chipmunks and four toes each on the front legs, but five on the hind legs.
[Eastern Chipmunk]
, West Virginia Wildlife Series The chipmunk's appearance "remains consistent throughout life. There is no external difference in appearance between the sexes except the obvious anatomical characteristics of the genitalia during periods of fertility. Molt occurs once or twice annually, during May or June and sometimes again in October. Both
albino
Albinism is the congenital absence of melanin in an animal or plant resulting in white hair, feathers, scales and skin and pink or blue eyes. Individuals with the condition are referred to as albino.
Varied use and interpretation of the term ...
and melanistic specimens have been observed, but without geographical regularity."
Habitat
The eastern chipmunk lives in
deciduous
In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...
wooded areas and urban parks throughout the eastern United States and southern
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
. It prefers locations with rocky areas, brush or log piles, and shrubs to provide cover.
Behavior
The eastern chipmunk can climb trees well, but constructs underground nests with extensive tunnel systems, often with several entrances. To hide the construction of its burrow, the eastern chipmunk is argued by some to carry soil to a different location in its cheek pouches. However, recorded observations of chipmunks carrying soil in their cheek pouches are extremely limited.
John Burroughs
John Burroughs (April 3, 1837 – March 29, 1921) was an American naturalist and nature essayist, active in the conservation movement in the United States. The first of his essay collections was ''Wake-Robin'' in 1871.
In the words of his bio ...
is noted as having written that "I used to think that the chipmunk carried away the soil in his cheek pouches, and have so-stated in one of my books
'Riverby'', 1894 but I am now certain that he does not—only his food stores are thus carried." Chipmunks also line their burrows with leaves, rocks, sticks, and other material, making the burrows even harder to see. "The vocal repertoire of the chipmunk consists of five more or less stereotyped sounds: the chip, the chuck, the trills, the whistle or squeal, and chatter." The chipmunks' trill has been measured to occur at the rate of 130 vibrations per minute.
[
In a six-year study that tracked 59 resident and 49 transient chipmunks on a 1.5 acre study area in ]Spotsylvania County, Virginia
Spotsylvania County is a county in the U.S. state of Virginia. As of the July 2021 estimate, the population was 143,676. Its county seat is Spotsylvania Courthouse.
History
At the time of European encounter, the inhabitants of the area that bec ...
during the late 1970s, chemistry professor Lawrence Wishner significantly contributed to contemporary published research regarding the Eastern Chipmunk's behavior by drawing on his copious, localized observational data. Wishner noted that "it cannot be overemphasized that the uniqueness of this study lies in its continuous day-to-day observation of 108 individual chipmunks for a period of six years."
Diet
The chipmunk is mainly active during the day, spending most of its day foraging. It prefers bulbs, seeds, fruits, nuts, green plants, mushrooms, insects, worms, and bird eggs. It commonly transports food in pouches in its cheeks.
Lifecycle
The eastern chipmunk defends its burrow and lives a solitary life, except during mating season. In fact, the chipmunk's solitary existence has been noted as "one of the most characteristic behavioral features of the chipmunk," whereas "social interaction of a relatively peaceful nature occurs only during the brief period of courtship and mating, and during the six to eight weeks that the young spend with the mother after birth." Females usually produce one or two litters of three to five young.[ The two breeding seasons are from February to April and from June to August. During the winter, the chipmunk may enter long periods of ]hibernation
Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most ...
.
Predators of the eastern chipmunk include hawk
Hawks are bird of prey, birds of prey of the family Accipitridae. They are widely distributed and are found on all continents except Antarctica.
* The subfamily Accipitrinae includes goshawks, sparrowhawks, sharp-shinned hawks and others. Th ...
s, owl
Owls are birds from the order Strigiformes (), which includes over 200 species of mostly solitary and nocturnal birds of prey typified by an upright stance, a large, broad head, binocular vision, binaural hearing, sharp talons, and feathers a ...
s, fox
Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush'').
Twelve sp ...
es, raccoon
The raccoon ( or , ''Procyon lotor''), sometimes called the common raccoon to distinguish it from other species, is a mammal native to North America. It is the largest of the procyonid family, having a body length of , and a body weight of ...
s, snake
Snakes are elongated, Limbless vertebrate, limbless, carnivore, carnivorous reptiles of the suborder Serpentes . Like all other Squamata, squamates, snakes are ectothermic, amniote vertebrates covered in overlapping Scale (zoology), scales. Ma ...
s, weasel
Weasels are mammals of the genus ''Mustela'' of the family Mustelidae. The genus ''Mustela'' includes the least weasels, polecats, stoats, ferrets and European mink. Members of this genus are small, active predators, with long and slender bo ...
s, coyote
The coyote (''Canis latrans'') is a species of canis, canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecologica ...
s, bobcat
The bobcat (''Lynx rufus''), also known as the red lynx, is a medium-sized cat native to North America. It ranges from southern Canada through most of the contiguous United States to Oaxaca in Mexico. It is listed as Least Concern on the IUC ...
s, lynx
A lynx is a type of wild cat.
Lynx may also refer to:
Astronomy
* Lynx (constellation)
* Lynx (Chinese astronomy)
* Lynx X-ray Observatory, a NASA-funded mission concept for a next-generation X-ray space observatory
Places Canada
* Lynx, Ontar ...
, domestic dog
The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the wolf. Also called the domestic dog, it is Domestication of the dog, derived from the extinct Pleistocene wolf, and the modern wolf is the dog's n ...
s and domestic cat
The cat (''Felis catus'') is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae and is commonly referred to as the domestic cat or house cat to distinguish it from the wild members o ...
s. On average, eastern chipmunks live three or more years in the wild, but in captivity they may live as long as eight years.[
Eastern chipmunks are known to be one of many hosts for the parasitic larvae of '']Cuterebra
''Cuterebra'', or rodent bots, is a genus of bot flies that attack rodents and similar animals.
Etymology
The genus name ''Cuterebra'' is a blend of the Latin words ''cutis'' : skin and ''terebra'' : borer with apparent shortening of expected '' ...
'' botflies.
''T. s. doorsiensis''
The subspecies ''Tamias striatus doorsiensis'' was described in 1971. It is only found in Door
A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a ''doorway'' or ''portal''. A door's essential and primary purpose is to provide security b ...
, Kewaunee, northeastern Brown
Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing or painting, brown is usually made by combining the colors orange and black. In the RGB color model used ...
, and possibly Manitowoc counties in northeastern Wisconsin.[''Tales of the wild: a year with nature'' by Roy Lukes,]
entry on worldcat.org
Egg Harbor, Wisconsin: Nature-Wise, 2000, p. 73 Compared to the other subspecies of eastern chipmunk present in nearby in Michigan and Wisconsin, they have brighter patches behind their ears, grayer hair along their backs, and more white on their tails. It is smaller than ''T. s. griseus'' but larger than the least chipmunk
The least chipmunk (''Neotamias minimus'') is the smallest species of chipmunk and the most widespread in North America.
Description
It is the smallest species of chipmunk, measuring about in total length with a weight of . The body is gray to ...
(''Neotamias minimus'').[
]
Gallery
References
External links
*
*
*
Eastern Chipmunk
Fletcher Wildlife Garden
{{Taxonbar, from=Q692664
Tamias
Mammals of Canada
Mammals of the United States
Fauna of the Eastern United States
Mammals described in 1758
Articles containing video clips
Taxa named by Carl Linnaeus
Door County, Wisconsin