Ornithological Societies of North America (OSNA) is the joint membership and billing service of the American Ornithologists' Union (AOU), Association of Field Ornithologists (AFO), Cooper Ornithological Society (COS), Raptor Research Foundation (RRF), Waterbird Society (WS), and Wilson Ornithological Society (WOS). OSNA was created in 1979 by the AOU, COS, and WOS to provide for efficient mailing of the jointly produced Ornithological Newsletter.
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