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little-W | Studying gulls: Black-headed Gull, 2cy, black spots on tertials
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little-W | Studying gulls: Black-headed Gull, 2cy, W[T687]
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little-W | Studying gulls: Black-headed Gull, 2cy, R[4.8]
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little-W | Studying gulls: Black-headed Gull, 2cy, M[Arnhem 3725303]
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little-W | Studying gulls: Black-headed Gull, 2cy, M[Arnhem 3.698999]
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little-W | Studying gulls: Black-headed Gull, 2cy, R[4.8]
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little-W | Studying gulls: Black-headed Gull, 2cy, M[Denmark 6H-9044]