References

Duff, Dr.P. Northern Red Squirrel Pox Virus. http://northernredsquirrels.org.uk/pox.htm 

Grey Squirrel. 2012. BBC. http://www.bbc.co.uk/nature/life/Eastern_gray_squirrel

Hamilton, H. Eastern Grey Squirrel. Canadian Wildlife Federation.
           http://www.hww.ca/en/species/mammals/eastern-grey-squirrel.html

Lawniczak, M. 2002. Sciurus carolinensis eastern gray squirrel. University of Michigan Museum  of Zoology. http://animaldiversity.ummz.umich.edu/ info/Sciurus_carolinensis.html              Accessed February 26 2012.

Ruff, S.,Wilson,D. 1999. The Smithsonian Book of North American Mammals. Washington [D.C.]           Smithsonian Institution Press in association with the American Society of Mammalogists.

Sciurus carolinensis Eastern Gray Squirrel. Smithsonian National Museum of Natural History.      http://www.mnh.si.edu/mna/image/info.cfm?species_id=298 

Sciurus carolinensis. 2005. Global Invasive Species Database.
             http://www.issg.org/database/species/impact_info.asp?si=65&fr=1&sts=&lang=EN
             Accessed on March 3 2012. 

Thompson, D. Diurnal and seasonal activity of the grey squirrel (Sciurus carolinensis). 1977.           Canadian Journal of Zoology, 55(7) 77-153

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