Heinz Sielmann

Eumetopias jubata (Otariidae) - Verhaltensweisen in der Kolonie

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Otis tarda (Otididae) - Balzverhalten

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Vanishing Wilderness

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Lockende Wildnis

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Wonderen van het Afrikaanse Woud

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Gasterosteus aculeatus (Gasterosteidae) - Balz und Ablaichen

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Galapagos - Trauminsel im Pazifik

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Lords of the Forest

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Vrijheren van het Woud

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Wiesensommer

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Die Iltiskoppel

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Woodpecker

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Konzert am Tümpel

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Quick - das Eichhörnchen

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Lied der Wildbahn

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