South Island Snipe, Coenocorypha iredalei.
Formally considered a subspecies of Subantarctic Snipe C. aucklandica. This is still considered a subspecies by IUCN
History: This species once lived across South Island and Stewart Island and its surrounding islets. It became extinct on South Island after its occupation by humans coming from Polynesia. It survived on nine smaller islands until the nineteenth and twentieth centuries. In 1964 there was an attempt to relocate the remaining birds to rat free islands but they died in captivity and the species was considered extinct. There have been no acceptable records since.
http://www.waderquest.org/2013/02/extinct-species-3-south-island-snipe.html
Formally considered a subspecies of Subantarctic Snipe C. aucklandica. This is still considered a subspecies by IUCN
History: This species once lived across South Island and Stewart Island and its surrounding islets. It became extinct on South Island after its occupation by humans coming from Polynesia. It survived on nine smaller islands until the nineteenth and twentieth centuries. In 1964 there was an attempt to relocate the remaining birds to rat free islands but they died in captivity and the species was considered extinct. There have been no acceptable records since.
http://www.waderquest.org/2013/02/extinct-species-3-south-island-snipe.html