Tree cavities used by nesting eastern bluebirds (Sialia sialis) were described and compared for 2 study areas to assess the effects of different land use practices and competition for nest sites with other species. All but 2 of 98 next cavities were located in dead trees or dead limbs; 71.5% of the nests were located in pines (Pinus spp.) or oaks (Quercus spp.). Abandoned woodpecker nest cavities accounted for 77.6% of the cavities used, and management procedures beneficial to most woodpecker species are, therefore, also beneficial to bluebirds. Even-aged timber management and extensive removal of dead trees are detrimental to bluebirds.