Estimates of United States bird trends and bird group relative abundance trajectories, 1970 - 2022

This dataset consists of estimates of population trends for 236 species and species complexes of North American birds, and bird taxonomic, primary habitat biome, or conservation status group relative abundance trajectories. Both sets of estimates cover the period 1970 - 2022. Sources of data include the North American Breeding Bird Survey (BBS), Christmas Bird Count (CBC), Waterfowl Breeding Population and Habitat Survey (WBPHS), and the American Woodcock Singing-ground Survey (SGS). The groups with collective relative abundance trajectories are Aridland, Dabbling and Diving Ducks, Eastern Forest, Geese and Swans, Grassland, Sea Ducks, Tipping Point, Waterbirds, and Western Forest.