Animalia > Chordata > Mammalia > Rodentia > Sciuridae > Tamiasciurus > Tamiasciurus hudsonicus

Tamiasciurus hudsonicus (red squirrel)

Synonyms: Sciurus hudsonicus (homotypic); Sciurus tenuidens
Language: French

Wikipedia Abstract

The American red squirrel (Tamiasciurus hudsonicus) is one of three species of tree squirrel currently classified in the genus Tamiasciurus, known as the pine squirrels (the others are the Douglas squirrel, T. douglasii and Mearns's squirrel, T. mearnsi). American red squirrels are also referred to as pine squirrels, North American red squirrels, boomers, and chickarees. They are medium-sized (200–250 g) diurnal mammals that defend a year-round exclusive territory. The diet of these tree squirrels is specialized on the seeds of conifer cones. As such, they are widely distributed across North America wherever conifers are common, except on the Pacific coast, where they are replaced by Douglas squirrels. Recently, American red squirrels have been expanding their range to include primarily ha
View Wikipedia Record: Tamiasciurus hudsonicus


EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.77
EDGE Score: 1.91


Adult Weight [1]  200 grams
Birth Weight [1]  7 grams
Male Weight [4]  186 grams
Diet [2]  Carnivore (Vertebrates), Frugivore, Nectarivore, Granivore, Herbivore
Diet - Endothermic [2]  20 %
Diet - Fruit [2]  20 %
Diet - Nectar [2]  10 %
Diet - Plants [2]  20 %
Diet - Seeds [2]  20 %
Diet - Vertibrates [2]  10 %
Forages - Arboreal [2]  100 %
Female Maturity [1]  11 months 12 days
Gestation [1]  37 days
Litter Size [1]  4
Litters / Year [1]  2
Maximum Longevity [1]  10 years
Snout to Vent Length [4]  7 inches (19 cm)
Weaning [1]  63 days
Habitat Substrate [3]  Arboreal


Protected Areas

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Habitat Vegetation Classification

Name Location  Website 
Blue Ridge Table Mountain Pine - Pitch Pine Woodland (Typic Type) United States (Tennessee, South Carolina, North Carolina, Georgia, Kentucky, Virginia)
High-Elevation Red Oak Forest (Tall Herb Type) United States (North Carolina, Tennessee)
Montane Red Spruce - Fir Forest United States (New Hampshire, Massachusetts, New York, Vermont, Maine); Canada (New Brunswick)
Northern Appalachian Spruce - Fir Swamp Forest United States (Maine, Massachusetts, Vermont, New Hampshire, Connecticut, New York); Canada (New Brunswick)
Southern Appalachian High-Elevation Red Oak Forest (Deciduous Shrub Type) United States (Georgia, West Virginia, North Carolina, Tennessee, Virginia)
Southern Appalachian High-Elevation Red Oak Forest (Evergreen Shrub Type) United States (North Carolina, Georgia, Tennessee, Virginia)

Prey / Diet

Prey / Diet Overlap



Picea mariana (Black spruce)[6]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
5Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
6Making The Forest And Tundra Wildlife Connection
7Exploring the Denali Food Web, ParkWise, National Park Service
8National Geographic Magazine - May 2016 - Yellowstone - The Carnivore Comeback
9Geographic variation in walnut seed size correlates with hoarding behaviour of two rodent species, N. Tamura and F. Hayashi, Ecol Res (2008) 23: 607–614
10Diet of the Timber Rattlesnake, Crotalus horridus, Rulon W. Clark, Journal of Herpetology, Vol. 36, No. 3, pp. 494-499, 2002
11International Flea Database
12Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2020-03-21; License: CC BY 4.0