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Guadalupe Storm-petrel

Hydrobates macrodactylus


The Guadalupe Storm-petrel was once abundant on Guadalupe, Mexico in 1906, but the last record of a breeding bird was in 1912.

Searches in 1922, 1925 and the early 1970’s have all failed to locate the species. There have been some reports that the storm-petrels can be heard calling at night, but this is unlikely unless it is able to nest in rock crevices that are inaccessible to cats. Any remaining population is assumed to be fewer than 50 mature individuals, but it is feared this species is extinct. The main cause of its demise is thought be by heavy predation by feral cats, compounded by goats destroying and degrading nesting habitat. Guadalupe is now a designated Biosphere Reserve, but until recently there was very little active management. There has been a complete eradication of goats from the island and there is a programme to remove cats from the island also. Appropriate surveys during the correct season are required to see if there are any remaining adults left on Guadalupe.

  • Order: Procellariiformes
  • Family: Hydrobatidae
  • Population: Possibly extinct
  • Trend: unknown
  • Size: 23cm

EDGE Score

EDGE Score: 5.41 (?)
ED Score: 12.91 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


This species is found on Guadalupe, Mexico.

Habitat and Ecology

This species nests in burrows at high elevations in soft soil under pines and cyprus tree groves. Eggs are known to be laid between early March and late June.

Find out more

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).

Invasive species

Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
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