IUCN threat status:

Critically Endangered (CR)

Distribution

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Range Description

Puffinus bryani is currently only known from individuals found in burrows on Midway Island in the north-western Hawaiian chain, USA, and in the Bonin Islands (Ogasawara Islands), Japan. The species was described from an individual collected in 1963 on Midway Island, with another individual probably of this species observed on Midway in 1991-1992, but is considered unlikely to be regularly breeding in the Hawaiian chain as the seabird colonies have been studied in detail (Pyle et al. 2011). Subsequent analysis of specimens from the Bonin Islands suggests that its main breeding range is within that group, although much exploration is still to be done (Kawakami et al. 2012). Five of the six individuals recorded on the Bonin Islands have been corpses, three of which had been predated by Black Rats (Rattus rattus) (Fjeldså, 2013). The at-sea distribution is effectively unknown, although at a minimum it occurs in the tropical or subtropical waters of the central western Pacific Ocean between the north-western Hawaiian chain and the Bonin Islands. Its apparent rarity suggests that the population is extremely small.

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© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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