The Raven in Hesse (Germany) from 1912 to 1998 |
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The following maps show the distribution of common ravens (Corvus corax) on the level of districts in Hesse. The documentation of the ravens distribution by the authors began in October `99 in cooperation with the State Ornithological Station of Hesse, Rhineland Palatinate and Saarland in Frankfurt/Main and the Hessian Society for Ornithology and Nature Conservation (HGON). Questionnaires were sent to all the honorary ornithologists on the level of districts. Furthermore available literature was evaluated. The data collected with these methods are presented in the following maps.
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