The U.S. Fish and Wildlife Service is trying to reestablish the population of a snake that has been listed as threatened since 1978. Eastern Indigo snakes have been on the decline in the southern United States because of habitat loss and over harvest for the exotic pet trade. This week 15 adult snakes that were bred and raised in captivity were released in the Nature Conservancy’s Apalachicola Bluffs and Ravines Preserve in Liberty County. Since 2010, more than 130 Eastern Indigo snakes have also been released in the Conecuh National Forest in Alabama.