The cerulean warbler (Dendroica cerulea) is a neotropical migrant wood warbler that breeds in North America and migrates to wintering areas in South America. This species has experienced the greatest decline in numbers of all extant North American warbler species. The cerulean warbler is a former candidate for listing as threatened or endangered by the U.S. Fish and Wildlife Service. Current breeding range includes portions of eastern Canada and most of the northeastern and Atlantic states, but breeding has also been documented in Arkansas, Louisiana, Mississippi, Alabama, Tennessee, and Georgia. Breeding cerulean warblers prefer, and are most common in, large and contiguous hardwood forest tracts. They have been documented on a few military installations in the Southeast and primarily use habitats in the Southeast for migrational stopover habitat. This report is one of a series of 'Species Profiles' being developed for threatened, endangered, and sensitive species inhabiting southeastern United States plant communities. The work is being conducted as part of the Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP). The report is designed to supplement information provided in plant community management reports for major United States plant communities found on military installations. Information provided on the cerulean warbler includes status, life history and ecology, habitat requirements, impacts and cause of decline, management and protection, and inventory and monitoring.