As new paperback. A comprehensive and extensively researched presentation of the 443 birds that have been recorded in Colorado. Each species is presented by a unique combination of maps and graphs that clearly presents the bird's known status and distribution in the state. The clearly written text gives an overview of each bird and provides specific information including breeding, winter, and migration ranges and elevational distribution, relative abundance of each species by region and season, plus unusual records, birds of special concern in Colorado, and historical changes in distribution. Distribution and abundance maps for every species.