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Vasco VALADARES: Zarro-de-colar, Ring-necked duck (Aythya collaris)
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Vasco VALADARES: Zarro-de-colar e Frisada, Ring-necked duck and Gadwall (Aythya collaris, Anas strepera)
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Vasco VALADARES: Zarro-de-colar, Ring-necked duck (Aythya collaris)
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Vasco VALADARES: Zarro-de-colar, Ring-necked duck (Aythya collaris)
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Vasco VALADARES: Zarro-de-colar, Ring-necked duck (Aythya collaris)