Rossitten Bird Observatory ended in 1946.
Rossitten Bird Observatory was created in 1901.
Barren Grounds Bird Observatory ended in 2004.
Rotamah Island Bird Observatory ended in 2001.
Eyre Bird Observatory was created in 1977.
Sempach Bird Observatory was created in 1924.
Broome Bird Observatory was created in 1988.
Jerusalem Bird Observatory was created in 1994.
Heligoland Bird Observatory was created in 1910.
Barren Grounds Bird Observatory was created in 1982.
Rotamah Island Bird Observatory was created in 1979.
Great Basin Bird Observatory was created in 1997.
Whitefish Point Bird Observatory was created in 1978.