Sources

Evans, M, and A Otter. "Fatal Combined Infection with Haemoproteus Noctuae and Leucocytozoon Ziemanni in Juvenile Snowy Owls (nyctea Scandiaca)." The Veterinary Record : Journal of the British Veterinary Association. 143.3 (1998): 72. Print.

GILG, OLIVIER, BENOÎT SITTLER, and ILKKA HANSKI. "Climate Change and Cyclic Predator-Prey Population Dynamics in the High Arctic." Global Change Biology. 15.11 (2009): 2634-2652. Print.

"Global Warming Threatens Lemmings in Norway". National Geographic. Web. <http://news.nationalgeographic.com/news/2008/11/081105-fewer-lemmings.html>.

Holt, Denver W, and Steven A. Zetterberg. "The 2005 to 2006 Snowy Owl Irruption Migration to Western Montana." Northwestern Naturalist. 89.3 (2008): 145-151. Print.

Kerlinger, P, and M R. Lein. "Population Ecology of Snowy Owls During Winter on the Great Plains of North America." Condor. 90.4 
(1988): 866-874. Print.

Siegfried, W R, R L. Abraham, and V B. Kuechle. "Daily Temperature Cycles in Barred, Great-Horned and Snowy Owls." Condor. 77.4 (1975): 502-506. Print.


"Snowy Owl". National Geographic. Web. <http://animals.nationalgeographic.com/animals/birds/snowy-owl/>.

"Snowy Owl Biology". Owling.com. Web. <http://owling.com/Snowy_nh.htm>


"Snowy Owls May Provide Early Indications of Climate Change". That Bird Blog. Web.
<http://blogs.thatpetplace.com/thatbirdblog/2011/06/01/snowy-owls-may-provide-early-indications-of-climate-change/>



"Summer Sightings of Snowy Owls in the Republic of Tyva, Russia." Raptors Conservation. 2010.18 (2010). Print.

Tremblay, Jean-Pierre, Gilles Gauthier, Denis Lepage, and André Desrochers. "Factors Affecting Nesting Success in Greater Snow Geese: Effects of Habitat and Association with Snowy Owls." The Wilson Bulletin. 109.3 (1997). Print.

Valiela, Ivan, and Jennifer L. Bowen. "Shifts in Winter Distribution in Birds: Effects of Global Warming and Local Habitat Change." Ambio: a Journal of the Human Environment. 32.7 (2003): 476-480. Print.