Mike Potts / Looking toward Dent Island, where the long thought extinct Campbell Island teal (Anas aucklandica) was rediscovered in 1975, Campbell Island, Subantarctic New Zealand, January

Mike Potts / Campbell Island teal (Anas aucklandica) a flightless species thought to be extinct until it was found on Dent Island, a rat free isolated islet off Campbell Island in 1975. Probably the worlds rarest...

Ole Jorgen Liodden / Campbell teal (Anas nesiotis) on water, Campbell Islands, Sub-Antarctic New Zealand. November. Endemic species.

Tui De Roy / Campbell Island Teal (Anas aucklandica nesiotis) at waters edge. Codfish/Whenua Hou Island, New Zealand.

Doug Wechsler / Campbell island teal (Anas nesiotis) male swimming, New Zealand. Captive.

Tui De Roy / Campbell Island Flightless Teal (Anas nesiotis) world's smallest duck, flightless, Codfish Island, New Zealand

Tui De Roy / Campbell Island Flightless Teal (Anas nesiotis) world's smallest duck, flightless, group at shoreline, Codfish Island, New Zealand

Grant Maslowski / Two Campbell Island teals (Anas nesiotis) feeding in coastal stream under moonlight, Sealers Bay, Whenua Hou / Codfish Island, New Zealand.

Grant Maslowski / Campbell Island teal (Anas nesiotis) feeding in coastal stream under moonlight, Sealers Bay, Whenua Hou / Codfish Island, New Zealand.

Russell Laman / Campbell teal (Anas nesiotis) on water, Campbell Island, New Zealand Sub Antarctic Islands.