Glenn Bartley/ BIA / Crested Duck (Lophonetta specularioides) on pond, Falkland Islands

Glenn Bartley/ BIA / Crested Duck (Lophonetta specularioides) in defensive display, Falkland Islands

Marcos Baumann/ BIA / Crested Duck (Lophonetta specularioides) flying, Chile

Bernard Castelein / Crested duck (Anas specularioides) female, altiplano, Bolivia September

Bernard Castelein / Crested duck (Anas specularioides) female, altiplano, Bolivia September

Mike Read / Crested duck (Lophonetta specularioides specularioides) walking along the shore. Bleaker Island, Falkland Island. November.

Mike Read / Crested duck (Laphonetta specularioides specularioides) pair on the shore, Saunders Island Falkland Islands, November

Brent Stephenson / Crested duck (Lophonetta specularioides) on beach at waters edge, Carcass Island, Falkland Islands, South Atlantic, December.

Brent Stephenson / Crested duck (Lophonetta specularioides) walking across sand, Carcass Island, Falkland Islands, South Atlantic, December.

Brent Stephenson / Crested duck (Lophonetta specularioides) with duckling feeding in shallow water just off the beach, Carcass Island, Falkland Islands, South Atlantic, December.

David Pattyn / Tufted duck (Aytha fuligula) portrait, sleeping male in breeding plumage. The Netherlands. March.

David Pattyn / Tufted duck (Aytha fuligula) portrait of a male in breeding plumage. The Netherlands. March.