Andy Trowbridge / North Island saddleback (Philesturnus carunculatus rufusater) on the ground searching for food. Tiritiri Matangi Island, Hauraki Gulf, North Island, Auckland, New Zealand. September. Endangered specie...

Andy Trowbridge / North Island Kokako (Callaeas wilsoni) perched in tree (Coprosma species), showing diagnostic blue fleshy wattles. Tiritiri Matangi Island, Auckland, New Zealand. September. ENDANGERED SPECIES.

Tui De Roy / North Island Kokako (Callaeas cinerea wilsoni) singing. Otorohanga Breeding Centre, New Zealand, captive. Endangered species.

Brent Stephenson / Adult North Island saddleback (Philesturnus rufusater) feeding on nectar from a New Zealand flax (Phormium) flowers. Note the yellow pollen on the forehead. Tiritiri Matangi Island, Auckland, New Zeal...

Brent Stephenson / Adult North Island saddleback (Philesturnus rufusater) showing the obvious fleshy wattle at the base of the bill. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Recently fledged juvenile North Island saddleback (Philesturnus rufusater) peering out from the undergrowth. Tiritiri Matangi Island, Auckland, New Zealand, January. Near threatened.

Brent Stephenson / Recently fledged juvenile South Island saddleback (Philesturnus carunculatus) peering out from the undergrowth. Ulva Island, Stewart Island, New Zealand, November.

Brent Stephenson / Adult female Kokako (Callaeas wilsoni) perched in a shrub showing the distinctive strong legs, black zoro mask and blue wattles of this species. Tiritiri Matangi Island, Auckland, New Zealand, October...

Brent Stephenson / Immature North Island saddleback (Philesturnus rufusater) feeding on the ground, prising logs apart with its bill. Little Barrier Island, Auckland, New Zealand, September. Near threatened.

Brent Stephenson / Adult kokako (Callaeas wilsoni) perched in a flowering Pohutukawa tree (Metrosideros excelsa) and feeding on nectar. Tiritiri Matangi Island, Auckland, New Zealand, December. Endangered species.

Brent Stephenson / Adult South Island saddleback (Philesturnus carunculatus) foraging on nectar of the Southern rata (Metrosideros umbellata) Ulva Island, Stewart Island, New Zealand, November.

David Tipling / Huia (Heteralocha acutirostris) taxidermy specimen. North Island, New Zealand. Extinct species.

David Tipling / Kokako (Callaeus cinereus) Tiri Titiro, Matangi Island, New Zealand.

Tui De Roy / North Island Saddleback (Philesturnus carunculatus rufusater) vocalising territorial call. Tiritiri Matangi Island Open Sanctuary, New Zealand.

Tui De Roy / North Island Saddleback (Philesturnus carunculatus rufusater) feeding on insects in cabbage tree. Tiritiri Matangi Island Open Sanctuary, New Zealand.

Tui De Roy / North Island Saddleback (Philesturnus carunculatus rufusater) Tiritiri Matangi Island Open Santuary, New Zealand.

Tui De Roy / North Island Saddleback (Philesturnus carunculatus rufusater) singing. Tiritiri Matangi Island Open Sanctuary, New Zealand.

Tui De Roy / North Island Kokako (Callaeas cinerea wilsoni) singing. Otorohanga Breeding Centre, New Zealand.

Tui De Roy / North Island Kokako (Callaeas cinerea wilsoni) Otorohonga Breeding Centre, New Zealand.

Tui De Roy / North Island Kokako (Callaeas cinerea wilsoni) Otorohanga Breeding Centre, New Zealand.

Andy Trowbridge / North Island Saddleback (Philesturnus rufusater) perched on driftwood. Endangered species. Tiritiri Matangi Island, Hauraki Gulf, North Island, Auckland, New Zealand. September.

Brent Stephenson / North Island saddleback (Philesturnus rufusater) male feeds on the nectar from New Zealand flax (Phormium tenax) flowers. Tiritiri Matangi Island, Auckland, New Zealand, November.

Brent Stephenson / North island saddleback (Philesturnus rufusater) young calling as it feeds amongst the leaflitter, Tiritiri Matangi Island, Auckland, New Zealand, October.

Brent Stephenson / North island saddleback (Philesturnus rufusater) adult male hangs upside down whilst hammering at a rotten branch for insect food, Little Barrier Island, Hauraki Gulf, New Zealand, September.

Brent Stephenson / North Island Kokako (Callaeas wilsoni) perched in the subcanopy, showing diagnostic blue fleshy wattles. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / North Island Kokako (Callaeas wilsoni) feeding on leaves in the sub-canopy. Tiritiri Matangi Island, Auckland, New Zealand, September.

Rod Williams / North Island Kokako (Calleas wilsoni) feeding on Coprosma leaves, Tiritiri Island, North Island, New Zealand, Endangered, March

Rod Williams / North Island saddleback {Philesturnus rufusater } juvenile, captive, from Tiritiri Matangi Is, North Is, New Zealand

Mike Potts / North Island Saddleback (Philesturnus rufusater) feeding on fruit in tree, Tiri Tiri Matanga Island, North Island, New Zealand.

Mike Potts / North Island Saddleback (Philesturnus rufusater) feeding on fruit in tree, Tiri Tiri Matanga Island, North Island, New Zealand.

Bruce Thomson / North Island kokako (Callaeas wilsoni) in leafy branches, critically endangered almost flightless bird, Tiritiri Matangi Island, North Island, New Zealand.