Birds of the US–Mexico Borderlands: Distribution, Ecology, and Conservation is the latest Studies in Avian Biology from the Cooper Ornithological Society. This volume is an assemblage of the papers presented at the North American Ornithological Conference held in Veracruz, Mexico, on October 2006. It is organized into four sections of two to four papers addressing the topics of changes in distribution and abundance, population trends and ecology of riparian and wetland birds, population trends and ecology of grassland birds, and new technological applications and bird-conservation planning.