American Birding Association Birdwatcher Code of Ethics

Alianza Mesoamericana de Ecoturismo

American Bird Conservancy

Birdlife International Neotropical migrants in the Tropical Andes

Boreal Songbird Network

National Audubon Society Neotropical Migratory Birds and the Boreal Forest of North America

Partners In Flight

Rainforest Alliance

Rouge River Bird Observatory Threats to Neotropical migrants

Smithsonian Migratory Bird Center

Wisconsin Breeding Bird Atlas