CR (PE)
Guadalupe Storm-petrel Hydrobates macrodactylus



Family: Hydrobatidae (Northern Storm-petrels)

Authority: (Bryant, 1887)

Red List Category

Criteria: D

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Justification of Red List category
This formerly abundant species has not been recorded since 1912, despite several subsequent searches, and it may well have been driven extinct by feral cats, with declines compounded by nesting habitat destruction by goats. However, it cannot yet be presumed to be Extinct because there have been no thorough surveys of this difficult-to-detect species in the appropriate season since 1906, and relatively recent reports of unidentified storm-petrels calling at night, plus the persistence of Leach's Storm-petrel breeding on the island provide some hope that it may survive. Any remaining population is likely to be tiny, and for these reasons it is treated as Critically Endangered (Possibly Extinct).



Population size: 1-49

Population trend: Unknown

Distribution size (breeding/resident): 1 km2

Country endemic: Yes

Attributes
Land-mass type - oceanic island
Realm - Nearctic
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2016) Species factsheet: Hydrobates macrodactylus. Downloaded from http://www.birdlife.org on 07/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 07/12/2016.