The Tahiti petrel (Pseudobulweria rostrata) is a medium-sized, dark brown and white seabird found across the Pacific Ocean.

[1][2] The Tahiti petrel belongs to the Procellariidae family and is the most studied member of the Pseudobulweria genus which comprises three critically endangered species.

[1] Threats include introduced rats, feral cats, pigs, dogs, nickel mining, and light pollution.

Also, after originally being classified as Pterodroma, genetic studies showed that the bird is instead a part of the Pseudobulweria genus.

The biggest difference is usually in the narrower wings of the Tahiti petrel which are fully perpendicular to the body and straight in flight, more closely resembling an albatross.

Since these petrels do not dive, the presence of deep-sea fish in their stomachs indicates scavenging behaviour on dead organisms or seizing species at night when they migrate vertically in the water column.

[16] When in flight or on its breeding ground, P. r. rostrata uses a long series of whistles in an elaborate call ending with a hooting sound.

[9] Specifically in American Samoa, P. r. rostrata vocalization was described as a ground call composed of 7 parts, uttering a condensed version when in flight.

[1] Threats to P. r. rostrata populations include feral cats (Felis catus) and introduced rats (Rattus spp.).

[1] Although predator control is required, the development of roads in mountainous regions has increased predatory access to the Tahiti petrel's breeding sites.

[13] Similarly, the P. r. trouessarti subspecies is threatened by feral pigs (Sus scrofa), dogs (Canis familiaris), cats, and nickel mining.

[4] More specifically, dogs and pigs have been found to dig out the petrels from their nests whereas mining allows for the ingestion of harmful materials, decreasing breeding success.

[5] Furthermore, the relationship between Tahiti petrels and Wedge-tailed Shearwaters (Ardenna pacifica) is a topic of interest for researchers as intense competition for burrows has been recorded.

There, the Société Calédonienne d'Ornithologie (SCO) is campaigning to collect and release individuals disoriented by light pollution.