Hybride Ross/des neiges
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Hybride Canard colvert X Canard noir / Mallard X American Black Duck Hybrid
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Hybride Zilvermeeuw x Grote Burgemeester? / Hybrid Herring Gull x Glaucous Gull? / Larus argentatus x Larus hyperboreus?
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Hybride Garrot à oeil d'or x Garrot d'Islande, St Jean, Hybrid Common X Barrow's Goldeneye
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Hybride Pontische meeuw x Zilvermeeuw / Hybrid Caspian x Herring Gull / Larus cachinnans x Larus argentatus
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