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Sciurus aberti

Sciurus aberti (*)

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Mammalia
Subclassis: Theria
Infraclassis: Placentalia
Ordo: Rodentia
Subordo: Sciuromorpha
Familia: Sciuridae
Subfamilia: Sciurinae
Tribus: Sciurini
Genus: Sciurus
Species: Sciurus aberti
Subspecies: S. a. aberti - S. a. barberi - S. a. chuscensis - S. a. durangi - S. a. ferreus - S. a. kaibabensis


Sciurus aberti Woodhouse, 1853


* Sciurus aberti on Mammal Species of the World.
Don E. Wilson & DeeAnn M. Reeder (editors). 2005. Mammal Species of the World : A Taxonomic and Geographic Reference, 2-volume set (3rd ed).

Vernacular names
English: Abert's Squirrel, Tassel-eared Squirrel


Abert's squirrel (or tassel-eared squirrel) (Sciurus aberti) is a tree squirrel in the genus Sciurus endemic to the Rocky Mountains from United States to Mexico, with concentrations found in Arizona, The Grand Canyon, New Mexico, and southwestern Colorado.

The Abert's squirrel is named after Colonel John James Abert, an American naturalist and military officer who headed the Corps of Topographical Engineers and organized the effort to map the American West in the 1800s.


A number of subspecies have been described including the Kaibab Squirrel.

Physical characteristics
Abert's squirrels are 46–58 cm long with a tail of 19–25 cm. The most noticeable characteristic would be their hair ear tufts, which extend up from each ear 2–3 cm. They typically have a gray coat with a white underbelly and a very noticeable rusty/reddish colored strip down their back.

Biology and behavior

The Abert's squirrel typically builds its nest in the branches of the ponderosa pine in groups of twigs infected with dwarf mistletoe. They are strictly diurnal. The Abert's squirrel does not store its food like other North American squirrels.

The vast majority of the squirrel's diet consists of parts of the ponderosa pine. Feeding on the tree's seeds and buds in the warmer months, it depends on the inner bark of the tree for nourishment in the wintertime. Consequently, Abert's squirrels are found in coniferous forests with large populations of ponderosa pines.


1. ^ Linzey, A. V. (2008). Sciurus aberti. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 6 January 2009.
2. ^ Thorington, R.W., Jr.; Hoffmann, R.S. (2005). "Sciurus (Otosciurus) aberti". in Wilson, D.E.; Reeder, D.M. Mammal Species of the World: a taxonomic and geographic reference (3rd ed.). The Johns Hopkins University Press. pp. 754–818. ISBN 0-8018-8221-4. OCLC 26158608. http://www.bucknell.edu/msw3/browse.asp?s=y&id=12400074.

* Sciurus aberti (TSN 180173). Integrated Taxonomic Information System. Retrieved on 23 March 2006.

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Source: Wikispecies, Wikipedia: All text is available under the terms of the GNU Free Documentation License