American Ornithologists' Union: Ornithological Monographs series Number 74. Concomitant with the growth of human populations and infrastructure development that has left few landscapes untouched by human activities, there has been an increase in anthropogenic noise that emanates from urban areas, as well as from industrial agriculture, resource extraction activities, and our dendritic transportation networks. Although the negative effects of anthropogenic noise on humans are fairly well documented, only recently have biologists recognized that anthropogenic noise represents a serious concern for other species as well. The present volume is the first compilation specifically focused on this important conservation issue.