The grey duck/pārera (Anas superciliosa superciliosa) and the mallard are hard to distinguish. They are both pictured here, showing the grey duck with a green speculum and the mallard with a blue one.
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The grey duck/pārera (Anas superciliosa superciliosa) and the mallard are hard to distinguish. They are both pictured here, showing the grey duck with a green speculum and the mallard with a blue one.
