Mike Potts / New Zealand scaup (Aythya novaeseelandiae) on Lake Wanaka, South Island, New Zealand.

Mike Potts / Auckland Island flightless teal (Anas aucklandica) resting in Kelp beds on shore line. Enderby Island. Auckland Islands. Subantarctic islands of New Zealand.

Mike Potts / Auckland Island flightless teal (Anas aucklandica) resting in Kelp beds on shore line. Enderby Island. Auckland Islands. Subantarctic islands of New Zealand.

Mike Potts / Southern bull kelp (Durvillaea sp) home to the Aukland Island Teal (Anas aucklandica) Enderby Island. Auckland Islands. Subantarctic New Zealand.

Andy Trowbridge / New Zealand Scaup (Aythya novaeseelandiae) in flight. Lake Forsyth, Banks Peninsula, Christchurch, New Zealand. July.

Andy Trowbridge / New Zealand Scaup (Aythya novaeseelandiae) in water, late evening light. Christchurch, New Zealand. July.

Andy Trowbridge / Grey teal (Anas gracilis) perched on branch. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Adult Grey teal (Anas gracilis) perched on branch, its bright red eye suggest that this is a male. Christchurch, New Zealand. May.

Andy Trowbridge / New Zealand scaup (Aythya novaeseelandiae) bathing. Christchurch, South Island, New Zealand. July.

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...

Mike Potts / Auckland Island brown teal (Anas aucklandica) flightless and feeds and roosts in onshore kelp beds, lives predominantly on Enderby Island, Auckland Islands, Subantarctic New Zealand January