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Guam; Earl Campbell's brown tree snake research in a jungle area near Andersen Air Force Base. Snakes trapped, tagged, sexed, measured, weighed and released. . There are no birds on the Pacific Island of Guam thanks to the Brown Tree Snake. These hungry egg-eating snakes have overrun the tropical island after arriving on a lumber freighter from New Guinea during World War II. Besides wiping out the bird population, Brown Tree Snakes cause frequent power outages: they commit short circuit suicide when climbing between power lines.