This metapage, from the Patuxent Wildlife Research Center (PWRC), serves as a central location with links to twenty important bird monitoring programs in North America. Sites range from the well-established and wide ranging North American Breeding Bird Survey, the Christmas Bird Count, and the International Shorebird Survey to more recent and smaller initiatives including the Marsh Bird Monitoring Program, the Colonial Waterbird Inventory and Monitoring Program, and Project Birdscape, among others. Whether searching for scientific information or "citizen science" efforts, users will find this hub a useful stopping place.