Works Cited

“ Endangered Species.” tpwd.state.tx.us. Texas Parks & Wildlife, n.d. Web. 25 Sep. 2011.
                    <http://www.tpwd.state.tx.us/landwater/land/habitats/high_plains/endangered_species/>

“Western Short Grasslands.” globalspecies.org.  Myers Enterprises II, 2009 - 2011. Web. 23 Sep. 2011.
       
                            <http://www.globalspecies.org/ecoregions/display/NA0815>

“Western Short Grasslands (NA0815).” worldwildlife.org. World Wildlife Fund, 2001. Web. 23 Sep. 2011.
                    <http://www.worldwildlife.org/wildworld/profiles/terrestrial/na/na0815_full.html>