Swedish Ornithological Society was created in 1945.
Sussex Ornithological Society was created in 1962.
Georgia Ornithological Society was created in 1936.
Norwegian Ornithological Society was created in 1957.
Cooper Ornithological Society was created in 1893.
Florida Ornithological Society was created in 1972.
Ornithological Society of Polynesia was created in 1990.
Spanish Ornithological Society was created in 1954.
Neotropical Ornithological Society was created in 1987.
Wilson Ornithological Society was created in 1888.
Ornithological Society of the Middle East was created in 1978.
Queensland Ornithological Society Inc was created in 1969.
Ornithological Society of New Zealand was created in 1940.