Bernard Castelein / Yellow-billed teal (Anas georgica) at Laguna Hedionda, between Polques and Quetena, Altiplano, Bolivia

Bernard Castelein / Yellow-billed teal (Anas georgica) on shore of Laguna Hedionda, Altiplano, Bolivia

Bernard Castelein / Yellow-billed teal (Anas georgica) Laguna Hedionda, Altiplano, Bolivia

Agustin Esmoris / Speckled Teal (Anas flavirostris), Argentina

Mike Read / Speckled teal (Anas flavirostris) pair with four ducklings on a pond Saunders Island, Falkland Islands. November 2016

Roy Mangersnes / Yellow-billed pintail (Anas georgica) on a small lake, Salisbury Plains, South Georgia.

Rick Price / Yellow-billed or Brown Pintail Duck (Anas georgica georgica), Cumberland Bay, Grytviken, South Georgia. January.

Rick Price / Two South Georgia pintail ducks (Anas georgica georgica) in snow, endemic species, King Haakon Bay, Peggoty Bluff, South Georgia, Antarctica. November.

Glenn Bartley/ BIA / Speckled Teal (Anas flavirostris) on pond, Falkland Islands

Mark Carwardine / Yellow-billed / South Georgia pintail (Anas georgica), Grytviken, South Georgia, November

Mark Carwardine / Yellow-billed / South Georgia pintail (Anas georgica), Grytviken, South Georgia, November

David Tipling / South Georgia Pintail (Anas georgica georgica) taking off, Holmestrand, South Georgia January