Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | D2 |
Year | Category | Criteria |
---|---|---|
2018 | Vulnerable | D2 |
2016 | Vulnerable | D2 |
2012 | Vulnerable | D2 |
2010 | Vulnerable | D2 |
2008 | Vulnerable | D2 |
2006 | Vulnerable | |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | full migrant | Forest dependency | does not normally occur in forest |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 1,900,000 km2 | medium |
Area of Occupancy (breeding/resident) | 9 km2 | medium |
Number of locations | 3 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 5554 mature individuals | poor | estimated | 2004 |
Population trend | stable | poor | suspected | 1965-2010 |
Generation length | 15.6 years | - | - | - |
Number of subpopulations | 3 | - | - | - |
Population justification: The world population may be no greater than 10,000 individuals. The estimate of global breeding population, based on on-the-ground counts of nests, is 2,777 breeding pairs (or 5,554 breeding individuals) (Hodum 2012).
Trend justification: The population is thought to be stable although the very small breeding range of the species renders it susceptible to stochastic events.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Chile | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Chile | Islas Desventuradas |
Chile | Parque Nacional Archipiélago de Juan Fernández: Islas Robinson Crusoe and Santa Clara |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | major | breeding |
Marine Intertidal | Rocky Shoreline | suitable | breeding |
Marine Neritic | Pelagic | major | non-breeding |
Marine Neritic | Pelagic | major | breeding |
Marine Oceanic | Epipelagic (0-200m) | major | non-breeding |
Marine Oceanic | Epipelagic (0-200m) | major | breeding |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Capra hircus | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Nasua nasua | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Masatierra Petrel Pterodroma defilippiana. Downloaded from
https://datazone.birdlife.org/species/factsheet/masatierra-petrel-pterodroma-defilippiana on 14/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 14/12/2024.