nests on the kermadec island ledges

Size
Length: 30-35 cm, Weight: 90-120 g
Lifespan
15-20 years
Diet
Carnivorous. Feeds on small fish, squid, and crustaceans. Forages by dipping to the water's surface in flight. Often feeds in association with feeding tuna.
Habitat
Tropical and subtropical oceans. Breeds on remote coral atolls, rocky islets, and cliff faces. Nests in crevices or on ledges. Rarely approaches mainland coasts.
Range
Tropical and subtropical Pacific Ocean. Breeds on islands including Kermadecs, Lord Howe, Norfolk, and New Caledonia. In New Zealand, resident in Kermadec Islands.
Endemism
Visitor
Main Threats
Introduced predators on breeding islands including rats and cats. Sea level rise threatening low-lying nesting habitat. Climate change affecting prey distribution patterns.
Population
Global population estimated at 100,000-150,000 birds. In New Zealand, resident in the Kermadec Islands and a rare vagrant to the North Island coast.
Conservation Status
data_deficient
Human Risk
harmless
Handling Note
seabird, do not approach or disturb on nesting grounds
Conservation Note
Rare vagrant seabird; not assessed for conservation status in New Zealand.
Te Ao Māori
The grey noddy has no recognised Māori name. Its New Zealand presence is largely confined to the Kermadec Islands, which lie beyond traditional Māori voyaging range. In wider Pacific island cultures, noddies are significant seabirds. They guide fishers to tuna and signal changes in weather. The grey noddy carries that tradition into New Zealand's far north. It remains a visitor from distant waters, connecting local ecosystems to broader Pacific rhythms.
The grey noddy prefers the edges of the tropical Pacific. It is a dark tern, pale grey above and darker grey below, with a white cap and a white crescent under the eye. It looks like a black noddy that has been left in the sun too long. The effect is subtle. The bird is subtle. The bill is black and fine, slightly curved. The legs are black. The tail is long and wedge-shaped. In flight, it moves with a buoyant, fluttery motion. It is less direct than other noddies. It feeds by dipping to the surface, picking small fish and squid without landing. At sea, the bird flies low. It is often alone or in small groups. It does not form the large feeding flocks of other terns. It is a quiet bird. A solitary bird. A bird that seems content with its own company. Breeding takes place on remote islands. The nest is a platform of twigs and seaweed, set in a crevice or on a ledge. A single egg is laid. Both parents share incubation duties. The chick is fed by regurgitation. It fledges at about five weeks. Then it joins the adults at sea. In New Zealand, grey noddies are resident in the Kermadec Islands. The population there is small but stable. They nest on Raoul Island and nearby islets. Occasionally they wander south, reaching the North Island coast. It is a tropical bird in a temperate sea. The grey noddy was once considered the same species as the blue noddy of the Atlantic. They are now separate. The difference is subtle. A paler cap. A darker body. The birds do not care about the distinction. The call is a soft, plaintive whistle, often heard at night. On Raoul Island, with the wind in the pōhutukawa and the noddies calling from the cliffs, the sound is haunting. This is not a well-known bird. Even among birders, it is something of a mystery. It lives far from people. It breeds on islands that few visit. It keeps its secrets. The name "noddy" comes from the bird's habit of nodding its head when disturbed. The grey noddy nods less than other noddies. It seems calmer. Or more cautious. Introduced predators such as rats and cats threaten breeding islands. Sea level rise threatens low-lying nesting habitat. Climate change affects prey distribution patterns. The global population is estimated at 100,000 to 150,000 birds. In New Zealand, it remains resident in the Kermadec Islands and a rare vagrant to the North Island coast. The numbers are stable in its stronghold. The bird carries on.