stays only on the kermadec islands

Size
Length: 18-20 cm, Weight: 35-45 g
Lifespan
10-15 years
Diet
Carnivorous. Feeds on small crustaceans and fish. Forages by pattering on the water's surface. Often feeds in association with tuna and other predatory fish.
Habitat
Tropical and subtropical Pacific Ocean. Breeds only on remote islands in the Kermadec group. Nests in burrows dug into soft soil on steep, well-drained slopes.
Range
Endemic to the Kermadec Islands, New Zealand. Breeds only on Raoul Island and possibly adjacent islets. Does not leave the Kermadec group. Forages in surrounding tropical waters.
Endemism
Native
Main Threats
Introduced predators including rats and cats pose catastrophic risk given tiny population size. Climate change affecting prey distribution. Light pollution disorienting fledglings.
Population
Global population estimated at 500-1,000 birds, restricted entirely to the Kermadec Islands. Classified as Nationally Critical by DOC, one of the rarest seabirds.
Conservation Status
Nationally Vulnerable
Human Risk
harmless
Handling Note
vulnerable native petrel, do not approach nesting grounds
Conservation Note
Native petrel; breeds on Kermadec Islands and threatened by introduced predators and habitat loss.
Assessment
NZTCS Birds (2021)
Te Ao Māori
The Kermadec storm petrel has no recognised Māori name. Its breeding range is confined to the Kermadec Islands. Which lie beyond traditional Māori voyaging range. These distant lands were not part of the ancestral navigation networks. The bird represents the unique biodiversity of New Zealand's subtropical outposts. These are places of volcanic origin and remarkable endemism. The petrel remains a symbol of isolation. It exists outside the usual frameworks of cultural heritage. It is observed but not named. The bird connects local ecosystems to the broader Pacific region. It is a visitor from the deep north.
It lives on one small island group. The Kermadec storm petrel lives on the Kermadec Islands. A remote volcanic chain north of New Zealand. Nowhere else. A few hundred birds. A few small islands. That is the entire species. The plumage is pale grey above and white below. With a white face and a dark eye patch. The legs are long and pale. The feet are yellow. In flight, it patters across the water's surface. Feet tap. Wings hold high. A storm petrel feeding looks like it is walking on water. This visual trick defines the family. Feeding involves small crustaceans and fish. The bird plucks them from the surface. It flies low. Pattering. Dipping. Snatching. It does not dive. The flight is fluttery and bat-like. With rapid wingbeats and sudden banks. In a tropical storm, the Kermadec storm petrel is in its element. It rides the wind. Tilting from one gust to the next. It uses the chaos. Stability is not required. Breeding takes place on the Kermadec Islands. The burrow is dug into soft soil on a steep slope. Often under forest canopy. A single white egg is laid. Both parents share incubation duties. The chick is fed on regurgitated crustacean oil. It fledges at about two months. Then it leaves. It spends years at sea before returning. The Kermadec storm petrel was described in 1969. It was the last storm petrel discovered in New Zealand. It was also one of the most endangered. The population is tiny. The range is tiny. A single predator incursion could wipe it out. Raoul Island, the main island in the group, is predator-free. The birds are safe there. But rats and cats have reached other islands in the group. The storm petrels no longer breed there. Conservationists monitor the population. They count the birds. They protect the island. They hope. The call is a soft, purring moan. Heard only at night. On Raoul Island, with the wind in the forest and the storm petrels calling, the sound is rare and precious. It marks the presence of life in isolation. The name "albidunis" means white wave. It refers to the bird's white plumage and its habit of flying low over the water. The Kermadec storm petrel is one of the least known of New Zealand's birds. Even among seabird experts, it is a mystery. It lives far from people. It comes to land only at night. It keeps its secrets. The global population is estimated at 500 to 1,000 birds. It is restricted entirely to the Kermadec Islands. The Department of Conservation classifies the species as Nationally Critical. It is one of the rarest seabirds in New Zealand. The numbers are low. The pressure is high. It carries on.