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Johan van Beilen: Zilvermeeuw (Larus argentatus)
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Johan van Beilen: Zilvermeeuw (Larus argentatus)
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Johan van Beilen: Kokmeeuw (Chroicocephalus ridibundus)
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Johan van Beilen: Zilvermeeuw (Larus argentatus)
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Johan van Beilen: Kokmeeuw (Chroicocephalus ridibundus)
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Johan van Beilen: Two Herring gulls fighting on the beach
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Johan van Beilen: Two Herring gulls fighting on the beach
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Johan van Beilen: Young herring gurls on the breakwater on Vlieland
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Johan van Beilen: Young Herring Gull on the Wad near Vlieland