Population Trends

population trends for wetland, forest, and grassland birds As presented in previous State of the Birds reports, combined population trends for suites of bird species dependent on major habitat types represent important indicators of the overall health of those ecosystems, for birds and people. Dots on this graph indicate start dates for key Farm Bill conservation programs, showing the change in populations of wetland, forest, and grassland birds after these programs were implemented. For more details on this graph, see Methods.

Farm Bill Conservation Programs Reverse Bird Population Declines

After two decades of declines, wetland bird populations grew dramatically—and forest and grassland birds stabilized—following the introduction of key Farm Bill conservation programs.

The graph shows: