Oscar Dewhurst / Yellow-billed teal (Anas flavirostris) swimming in Andean lake. Arequipa, Peru. September

Oscar Dewhurst / Yellow-billed teal (Anas flavirostris) perched on rock in river. Arequipa, Peru. September. Cropped

Mike Potts / Speckled Teal (Anas flavirostris) Saunders Island. Falkland Islands. January

Mike Potts / Speckled teal (Anas flavirostris) in stream, Saunders Island. Falkland Islands. January

Mike Potts / Speckled teal (Anas flavirostris) in stream, Saunders Island. Falkland Islands. January

Mike Potts / Speckled teal (Anas flavirostris) in stream, Saunders Island. Falkland Islands. January

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

Mike Read / Speckled teal (Anas flavirostris) resting on pond. Sea Lion Island. Falkland Islands. November.

Mike Read / Speckled teal (Anas flavirostris) pair resting on grassland, Bleaker Island, Falkland Islands November

Gabriel Rojo / Yellow-billed teal (Anas flavirostris) two swimming, La Pampa, Argentina

Tim Laman / Speckled teal (Anas flavirostris) on rock, Carcass Island, Falkland Islands.

Bruce Thomson / Speckled teal duck (Anas flavirostris) at water's edge, Buenos Aires, Argentina.