Society of Canadian Ornithologists was created in 1983.
Canberra Ornithologists Group was created in 1970.
Adelaide Ornithologists Club was created in 1960.
Scottish Ornithologists' Club was created in 1936.
American Ornithologists' Union was created in 1883.
Association of Field Ornithologists was created in 1922.
Canadian Cancer Society was created in 1938.
Canadian Identification Society was created in 1977.
Canadian Paediatric Society was created in 1922.
Canadian Nuclear Society was created in 1970.
NSW Field Ornithologists Club was created in 1970.
Royal Australasian Ornithologists Union was created in 1901.
Canadian Paper Money Society was created in 1960.