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Paul Bachhausen: Pelophylax ridibunda
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Paul Bachhausen: Pelophylax ridibunda
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Paul Bachhausen: Helix pomatia
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Paul Bachhausen: Cygnus olor
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Paul Bachhausen: Teichbiotop
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Paul Bachhausen: Alopochen aegyptiacus
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Paul Bachhausen: Ciconia ciconia