Location Details/Description: Patuxent Research Refuge; Laurel, MD Patuxent Research Refuge, established by Executive Order in 1936, is unique among U.S. Fish and Wildlife Service refuges. Patuxent is the only refuge established to support conservation research and habitat management. Research areas have included Whooping-Crane rearing techniques, DDT transmission in food chains, the effects of light and sound on diving ducks, and many more projects that have benefited the nation's wildlife. The refuge is the largest block of unfragmented forest between Washington, D.C. and Baltimore, and has been called the "green lungs" of the region. Patuxent's location in central Maryland, an area of high population density, makes this refuge ideally suited to introduce and support