Lesser Black backed (Heuglin's Gull) 3475.jpg
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Adult Pallas's Gull with first winter Heuglin's Gull (ssp. heuglini)
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Silltrut (Heuglin's) Larus fuscus heuglini, juvenil
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Silltrut (Heuglin's) Larus fuscus, juvenil
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Silltrut (Heuglin's) Larus fuscus heuglini, juvenil
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Silltrut (Heuglin's) Larus fuscus heuglini, juvenil
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Heuglin's gu;;
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Mongolian Gull (Larus mongolicus) Third calendar year *on the right* Mai Po Nature Reserve Hong Kong
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Vega Gull (Larus vegae) *centre right* Hong Kong Mai Po Nature Reserve Hong Kong
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Adult winter Taimyr Gull (ssp. heuglini)
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