AdvertisementOil Threatens Brown Pelican Off Of Louisiana CoastMay 21, 2010Melissa BlockfacebookEmailThe brown pelican, which completely disappeared from Louisiana by the 1960s largely because of DDT, was listed as an endangered species — but then young pelicans were transplanted from Florida and the species gradually recovered. Now environmentalists are worried that the oil spill may reach the the Breton National Wildlife Refuge where brown pelicans nest. (iStockphoto.com)