606014 external_news 1525886636 1525886683 According to a recent study, unusual sightings of alligators and other predators are not due to the animals expanding their ranges in search of food, which was the previous consensus. Instead, the animals are recolonizing ecosystems they once inhabited before humans came along and stripped them of resources. School of Biological Sciences Professor Mark Hay comments on the study, which was published in the journal Current Biology.

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