nests on the kermadec island cliffs

Size
Length: 35-40 cm, Weight: 150-200 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 in association with predatory fish.
Habitat
Tropical and subtropical oceans. Breeds on coral atolls, rocky islets, and mangrove islands. Nests on cliffs, in trees, or on the ground in dense colonies.
Range
Pantropical across the Atlantic, Indian, and Pacific Oceans. In New Zealand, resident in the Kermadec Islands and a rare vagrant to the North Island coast.
Endemism
Native
Main Threats
Introduced predators on breeding islands including rats, cats, and pigs. Sea level rise threatening low-lying coral atoll nesting habitat. Disturbance by humans.
Population
Global population large and stable, estimated at several million birds. New Zealand records are rare vagrants, most frequently seen in the Kermadec Islands.
Conservation Status
Not Threatened
Human Risk
harmless
Handling Note
seabird, do not approach or disturb on nesting grounds
Conservation Note
Native seabird; breeds on Kermadec Islands and is widespread in tropical Pacific.
Assessment
NZTCS Birds (2021)
Te Ao Māori
The brown noddy has no recognised Māori name. Its New Zealand presence is limited to the Kermadec Islands and rare vagrant sightings. In Pacific island cultures, noddies are significant seabirds. They guide fishers to tuna. They signal changes in weather. Their presence at sea indicates rich feeding grounds. New Zealand's occasional visitors carry echoes of that Polynesian knowledge. The connection is indirect. It is thematic. The bird serves as a marker. It points to food. It warns of storms. The respect is practical. It endures across the Pacific.
The brown noddy is the least tern-like of all the terns. It is stocky and dark. It moves with the deliberate calm of a bird that has never been told to hurry. The plumage is chocolate brown above. It is paler below. A white cap fades to grey on the nape. The eye is dark. The bill is black and fine. It is slightly curved. It looks like a tern redesigned for a slower pace of life. The design is functional. It suits the lifestyle. It nests in colonies that can cover entire islands. The nest is a platform of twigs, seaweed, and feathers. It is glued together with guano. It sits in a tree, on a cliff ledge, or directly on the ground. A single egg is laid. Both parents share incubation. The chick takes about five weeks to fledge. It then returns to the nest for another month of free meals. The dependency is prolonged. The investment is high. Feeding is less energetic than other terns. The brown noddy dips to the surface. It snatches small fish and squid without landing. There is no plunge diving. No hovering. Just a quick snatch and a return to cruising. It sometimes feeds at night. This is when squid rise closer to the surface. The timing is opportunistic. The technique is efficient. At sea, it flies low and steady. It often travels in long lines of birds following the same current. It rarely ventures far from land. The brown noddy is a bird of the inshore tropics. It is not a bird of the open ocean. That makes its appearance in New Zealand waters unusual. It is a tropical bird that took a wrong turn. It ended up in the temperate south. The displacement is accidental. The survival is notable. The feet are webbed, but barely. Noddies perch more than they swim. They cling to branches and rocks with a grip that seems improbable. The name comes from the bird's habit of nodding its head when disturbed. It does not fly away immediately. It nods first. A warning. A negotiation. Then it flies. The behaviour is distinctive. It defines the species. In the Kermadec Islands, where New Zealand's only resident population lives, the brown noddy is common. On the mainland, it is a legend. Dozens of records exist. Most come from Northland and the Bay of Plenty. These are single birds. Tired travellers. Lost. They usually stay for a few days. They feed. Then they disappear. The common noddy, the white-capped noddy, and the black noddy are relatives. The brown noddy is the largest of the group. That is not saying much. All noddies are small. All are dark. All seem slightly confused about why anyone would want to live in cold water. It carries on.