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.