Synonyms for the Fiji petrel include Pseudobulweria macgillivrayi and Thalassidroma macgillivrayi. Very little information is available on the Fiji petrel and its life history. There have only been 12 substantiated sightings of this species on land since 1965, and a total of 13 historically. These sightings have all been on Gau Island (BirdLife International 2000), a 52.55-square mile (136.1 km\2\) island in Fiji's Lomaiviti archipelago (Wikipedia 2007f). The population of this species is very small, estimated at less than 50 birds and is showing a decreasing population trend (BirdLife International 2007c). The IUCN classifies the Fiji petrel as ``Critically Endangered'' (BirdLife International 2006c).