PHOTOS: Animals Stopped in Their Tracks by Border Wall?

PHOTOS: Animals Stopped in Their Tracks by Border Wall?
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Bighorn sheep scramble along a rock ledge in southwestern Arizona's Tinajas Altas Mountains in August 2008.

Although bighorns occur in high numbers in the United States, they occur in only two protected areas in Mexico, where they are under threat from poaching, competition from domestic livestock, and habitat degradation, according to the International Union for Conservation of Nature.

U.S. bighorns move south and repopulate the Mexican stock, a natural restoration process that may be prevented by the construction of a new border fence, said Krista Schlyer, who led a photo expedition to the U.S.-Mexico border between January and February 2009.
—Photograph courtesy Krista Schlyer
 
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