IUCN threat status:

Endangered (EN)


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Range Description

Pterodroma alba breeds in the Line and Phoenix Islands (Kiribati), Marquesas Islands (French Polynesia), and Pitcairn Islands (to UK) (c.12-20 pairs on Oeno in 1997 and 1998 [Bell and Bell 1998, B. Bell verbally 1999]). In the Line Islands, the stronghold is Kiritimati (= Christmas Island) where, in 1967, the population was estimated at c.6,500 adults (Schreiber and Ashmole 1970) and, in 1980-1982, 20,000-25,000 (Perry 1980, Garnett 1984). Since then, it has apparently decreased, although previous estimates may have been too high (M. Rauzon in litt. 1999). In 2007, the population on Kiritimati was estimated at 2,300-3,800 pairs (per J.-C. Thibault in litt. 2012). In 1957, motus Tabu and Upua (islets in the main lagoon) supported c.800 nests each (Gallager 1960), in 1993, 50 and 40 pairs respectively (Jones, unknown), and in 1999, 200 and 300 (D. Watling in litt. 1999). In the Phoenix Islands, there were 50+ pairs on Canton in 1987 (Teebaki 1987), but none were found in surveys in 1995 and 1996 (nor did residents recall seeing them) (Flint and Bailey 1995, Flint et al. 1996), although, in 1999, it appeared common on Phoenix (A. D. Piazza per D. Watling in litt. 1999). In the Marquesas, it was present on two motus off Ua Pou in 1989 and 1990, on Fatu Huku (five pairs) in 1990 (V. Bretagnolle in litt. 1999) and more than 250 pairs were recorded on Hatuta'a Island in 2007 (Gangloff et al. 2009), although the population there in November 2010 was estimated at c.100 adults (J.-C. Thibault in litt. 2012). At Fatu Huku, c.12 birds were observed flying and one incubating in July 2011 (J.-F. Butaud per J.-C. Thibault in litt. 2012). At least one pair was found breeding on Hatu-Iti (=Motu Iti) (Marquesas Islands) in March 2010 (Champeau et al. 2011). There are no recent confirmed records from the Tuamotus (Holyoak and Thibault 1984) or Tonga (M. Rauzon in litt. 1999). During the non-breeding season it disperses over much of the tropical Pacific as far north as Hawaii and as far south as the Kermadec Islands (Gangloff et al. 2009).


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© International Union for Conservation of Nature and Natural Resources

Source: IUCN


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