References

Written Sources

Alderfer, J. Complete Birds of North America. National Geographic. Washington, D.C. 2006.

Dobkin, D., Ehrlich, P. and Wheye, D. The Birder’s Handbook. Simon and Schuster Inc. 1988.

Middleton, A. and Perrins, C.M. The Encyclopedia of birds. New York, N.Y. Facts on File. 1985.

Nehls, S. and Petersen, L.R. Ecology of great horned owls and red-tailed hawks in southeastern Wisconsin. Wisconsin Dept. of Natural Resources. 1979: 12-51.

Price, T. Speciation in Birds. Roberts and Company. Greenwood Village, Colorado. 2008.

Electronic Sources

Blackfly-induced mortality of nestling red-tailed hawks (1997). <http://findarticles.com/p/articles/mi_qa3793/is_199804/ai_n8784166/?tag=content;col1> Accessed 17 April 2010

Biogeography of Red-tailed Hawk (2000). <http://bss.sfsu.edu/holzman/courses/Fall00Projects/redtailedhawk.html> Accessed 10 April 2010.

Cornell Lab of Ornithology (2010). <http://www.allaboutbirds.org/guide/Red-tailed_Hawk/id> Accessed 10 April 2010.

Interesting facts about Red-tailed Hawks (2000). <http://www.arcytech.org/java/population/facts_hawks.html> Accessed 10 April 2010.

Parasites of birds of prey: their diagnosis and treatment (1996). <http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B75K1-4K310CC-6&_user=546868&_coverDate=04%2F30%2F1996&_rdoc=1&_fmt=high&_orig=search&_sort=d&_do
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version=1&_urlVersion=0&_userid=546868&md5=c8e96ff35e1cb5aa2fede159a53cff48> Accessed 13 April 2010.

The Peregrine Fund - Red-tailed Hawk (2010). <http://www.peregrinefund.org/explore_raptors/hawks/redtail.html> Accessed 5 April 2010.

Red-tailed Hawk (2010). <http://www.conservenature.org/prairie/red_tailed_hawk.htm> Accessed 13 April 2010.

Red-tailed Hawk (1997 - 2010). <http://www.desertusa.com/aug96/du_hawk.html>. Accessed 13 April 2010.

Red-tailed Hawk (2010). <http://www.smm.org/warnernaturecenter/animals/hawk/> Accessed 13 April 2010.

Tree of Life Web Project (1995-2005). <http://tolweb.org/tree/phylogeny.html>.  Accessed 13 April 2010.

Wikimedia Commons (2010). <http://commons.wikimedia.org/wiki/Main_Page> Accessed 17 April 2010.

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