Birds
Fairy Tern
Sternula nereis · also called fairy terns
Settling onto a bare scrape in the open sand, a fairy tern lays its eggs with almost no protection beyond camouflage, one of the smallest terns in the world and one of the most exposed to disturbance across its limited Australian and New Zealand range.
Overview
The fairy tern, Sternula nereis, is one of the smallest terns in the world, native to coastal habitat across parts of Australia, New Zealand, and New Caledonia. Its tiny size, bright yellow breeding bill, and highly exposed open-beach nesting habit that leaves eggs and chicks vulnerable to disturbance make it one of the most conservation-sensitive terns found anywhere in the Southern Hemisphere.
A nest with almost no protection
Choosing a bare scrape on open sand rather than any more sheltered site leaves the fairy tern’s eggs and chicks exposed to almost every passing threat, from beachgoers and vehicles to introduced predators drawn to the same accessible beaches.
Status
Vulnerable, having declined due to disturbance of its exposed beach nesting sites, with some regional populations reduced to very low numbers.
Fairy Tern: common questions
Why is the fairy tern so vulnerable to disturbance?
This species nests in shallow scrapes directly on open beaches, offering little protection for eggs and chicks, which leaves it highly vulnerable to disturbance from beachgoers, vehicles, and introduced predators.
How small is the fairy tern?
This species is one of the smallest terns in the world, notably light and delicate compared to most other coastal tern species, with a correspondingly small, bright yellow bill during the breeding season.
Where is the fairy tern found?
This species has a restricted range limited to parts of Australia, New Zealand, and New Caledonia, with some regional populations reduced to very low numbers due to ongoing habitat disturbance.
Why is the fairy tern classified as Vulnerable?
This species has declined due to disturbance of its exposed beach nesting sites by people, vehicles, and introduced predators, a combination of pressures that has significantly reduced some regional populations.