The Vanuatu petrel or Falla's petrel is a species of gadfly petrel. This little-known seabird was first scientifically described in 2001 based on six specimens taken in 1927 off Merelava, Vanuatu, and a single bird found ashore in 1983 in New South Wales, Australia. The first confirmed breeding locality was only discovered in 2009 on the island of Vanua Lava, Vanuatu, but based on reports by locals it is supposed to also breed on Merelava. The IUCN has not recognized the Vanuatu petrel as a species, but maintain that it as a subspecies of the very similar white-necked petrel, P. cervicalis, with the "combined" species considered vulnerable.
Region
Southwest Pacific
Typical Environment
At sea it inhabits tropical and subtropical waters of the southwest Pacific, ranging widely over deep oceanic habitats. It forages far from land over the open pelagic zone, often near productive upwellings and frontal systems. Breeding occurs on steep, forested volcanic slopes where it nests in burrows or natural crevices. Birds visit colonies after dark to reduce predation risk and disturbance.
Altitude Range
Sea level to 900 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 1/5
Also known as Falla's petrel, this elusive gadfly petrel was only described in 2001 from earlier-collected specimens. It breeds on remote volcanic slopes in northern Vanuatu and visits colonies only at night. At sea it ranges widely across the southwest Pacific and can be confused with the very similar white-necked petrel. Predation by introduced mammals and light disorientation near settlements are potential threats at breeding sites.
Temperament
pelagic and secretive
Flight Pattern
soaring glider with swift, shearing arcs and rapid banking
Social Behavior
Breeds colonially in scattered burrows or crevices on steep slopes. Pairs are long-term and typically lay a single egg per season, with shared incubation and chick-rearing. Activity at colonies is almost entirely nocturnal to avoid predators.
Migratory Pattern
Seasonal migrant
Song Description
At colonies it gives low, wailing moans and chattering calls, mostly delivered at night while circling or at the burrow. Vocalizations are contact and mate-advertising calls, often muffled from within burrows.
