Knob-billed Duck Sarkidiornis melanotos moulting in the Free State
Some Knob-billed Ducks Sarkidiornis melanotos in flightless moult were photographed on a farm dam in the central Free State Province of South Africa in May 2019. Although fairly common in the north-eastern quarter of southern Africa, this is apparently only the third record of this species moulting in the sub-region.
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