Search for: [Description = "During 1975\-82 a total of 4,426 bats belonging to 9 species, the most numerous, M. myotis, B. barbastellus, M. daubentoni, M. nattereri and P. auritus, hibernated in forts, in the citadel, in single gun bunkers and in the cellars of buildings. Distinct differences were observed among the species regarding preffered temperatures and choice of types of winter shelters."]

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