Citations

Sources

Primary

       Crozier, Michelle L., Mark E. Seamans, R.j. Gutiérrez, Peter J. Loschl, Robert B. Horn, Stan G. Sovern, and Eric D. Forsman. "Does The Presence Of Barred Owls Suppress The Calling Behavior Of Spotted Owls?" The Condor 108.4 (2006): 760. Print.

      Hamer, Thomas E., Eric D. Forsman, and Elizabeth M. Glenn. "Home Range Attributes And Habitat Selection Of Barred Owls And Spotted Owls In An Area Of Sympatry." The Condor 109.4 (2007): 750. Print.      

       Kelly, Elizabeth G., and Eric D. Forsman. "Recent Records of Hybridization between Barred Owls (Strix Varia) and Northern Spotted Owls (S. Occidentalis Caurina)." The Auk 121.3 (2004): 806-10. Print.     

  

       Livezey, Kent B. "Killing Barred Owls to Help Spotted Owls I: A Global Perspective."       Northwestern Naturalist 91.2 (2010): 107-33. Print.

      

       Livezey, Kent B. "Killing Barred Owls to Help Spotted Owls II: Implications for Many Other Range-Expanding Species." Northwestern Naturalist 91.3 (2010): 251-70. Print.

Secondary 

      "All About Birds." Your Online Guide to Birds and Bird Watching. N.p., n.d. Web. 24 Feb. 2014.          <http://www.allaboutbirds.org/Page.aspx?pid=1189>.

      "Barred Owls." Barred Owls. N.p., n.d. Web. 24 Feb. 2014. <http://www.bioweb.uncc.edu/bierregaard/barred_owls.htm>.

      "Canada Struggles to Breed Spotted Owls in Captivity." Canada Struggles to Breed Spotted Owls in Captivity · EarthFix · Oregon Public Broadcasting. N.p., n.d. Web. 08 Feb. 2014. <http://earthfix.opb.org/flora-and-fauna/article/how-canada-lost-its-spotted-owls/>.

      "Captive Breeding Program for Northern Spotted Owl." RSS. N.p., n.d. Web. 24 Feb. 2014. <http://www.hancockwildlife.org/article.php/20071115205200751>.      

   

      "Federal Wildlife Officials Plan to Send Hunters to Kill Barred Owls in Northwest." Fox News. FOX News Network, 23 July 2013. Web. 24 Feb. 2014. <http://www.foxnews.com/politics/2013/07/23/federal-wildlife-officials-plan-to-send-hunters-to-kill-barred-owls-in/>.      

      

      "Natural History." Natural History. N.p., n.d. Web. 24 Feb. 2014. <http://www.biologicaldiversity.org/species/birds/northern_spotted_owl/natural_history.html>.