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Of Bison, Birth Control And An Island Off Southern Calif. : NPR »
A wild herd of bison has been roaming the rugged Santa Catalina Island since the 1920s, when they were brought there by a film crew shooting a movie that was never made. With no natural predators, the bison population quickly exploded. Scientists there are now using a unique birth control method to control the herd's size. Source Main page (current trends)
More about: Birth Control, bison population, Santa Catalina Island, Southern Calif