The Pennsylvania Wilds region, located in the state's northern tier, holds the largest intact forests in the state and contains the largest remaining strongholds of forest interior bird populations in Pennsylvania. Migratory breeding species like Swainson's thrush, black-throated blue warbler, and scarlet tanager are among the species threatened by forest fragmentation within the region. Many of the largest tracts of forest are managed by state and federal agencies with an interest in bird habitat conservation, and this study was designed to inform forest managers about the densities of forest interior bird species in these forests. During the 2015 breeding season, we surveyed forest birds across seven agency-defined forest types within conifer, oak, and northern hardwoods forest groups and conducted simultaneous forest community rapid assessments, validating community classifications and measuring forest structure.