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John Valk: Vulture, Gier
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John Valk: Vulture
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John Valk: Gier, Vulture
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John Valk: Vulture
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John Valk: Vulture
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John Valk: Lions
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John Valk: Langstaart Makaak
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John Valk: Vulture
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John Valk: Groene Toerako, Green Turaco (Tauraco persa)
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John Valk: Blijdorp
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John Valk: Sea eagle
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John Valk: Blijdorp Oehoe
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John Valk: Europese Oehoe
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John Valk: Blijdorp Butterfly
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John Valk: Blijdorp Hornbill/Neushoornvogel
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John Valk: Blijdorp Ringstaart Makaak
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John Valk: Mhorr Gazelle
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John Valk: Blijdorp Ara
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John Valk: Ara, Blijdorp
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John Valk: Blijdorp Jerebos gifkikker/ Mimic poison frog
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John Valk: Blijdorp Rotterdam
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John Valk: Blijdorp Pinguin
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John Valk: Aras
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John Valk: Aras
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John Valk: Deckentok / Tockus deckeni
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John Valk: Blijdorp Woestijn Buizerd /desert buzzard
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John Valk: Blijdorp Amerikaanse kreeft
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John Valk: Blijdorp
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John Valk: Blijdorp
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John Valk: Vicuna Blijdorp