Rossitten Bird Observatory

The Rossitten Bird Observatory was the world's first ornithological observatory. It was sited at Rossitten, East Prussia , on the Curonian Spit on the south-eastern coast of the Baltic Sea. It was established by German ornithologist Johannes Thienemann and operated until 1944. In 1945 East Prussia was divided between Poland, Russia and Lithuania, and most ethnic Germans expelled.

The 98 km long Curonian Spit is a thin sand peninsula, ranging from about 400 m to 4 km in width, that separates the Baltic Sea from the shallow Curonian Lagoon. It has several settlements along its length. It lies on a major migration route for birds following the coastline of the eastern Baltic. Thienemann first visited the fishing village of Rossitten there in 1896 where he experienced “a bird migration proceeding in a regular manner but more massive than had ever before been observed in Germany” and he “could not stop wondering whether something of permanent value might somehow be achieved here”.

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