Taxonomic source(s)
Brooke, M. de L. 2004. Albatrosses and Petrels Across the World. Oxford University Press, Oxford.
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | B2ab(v) | B2ab(v); D2 |
Year | Category | Criteria |
---|---|---|
2018 | Endangered | B2ab(v) |
2016 | Endangered | B2ab(v) |
2012 | Endangered | B2ab(iii,v) |
2010 | Endangered | B2a+b(iii,v) |
2008 | Endangered | B2a+b(iii,v) |
2007 | Endangered | |
2006 | Endangered | |
2004 | Endangered | |
2000 | Endangered | |
1996 | Critically Endangered | |
1994 | Critically Endangered | |
1988 | Near Threatened |
Migratory status | full migrant | Forest dependency | high |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 31,300,000 km2 | medium |
Area of Occupancy (breeding/resident) | 16 km2 | medium |
Number of locations | 4 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 30000-40000 mature individuals | medium | estimated | 2016 |
Population trend | decreasing | poor | suspected | 1965-2010 |
Generation length | 15.6 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: Most breeding colonies of Barau's Petrel are completely out of reach and have never been assessed properly until recently. Thus, most previous population estimates and trends should be taken with caution. Recently, a combination of methods including annual census of fledglings attracted to lights from 1996 to 2016 (SEOR unpublished), wide scale radar survey, capture and recapture analysis at breeding colonies, study of burrow occupancy, habitat modelling (and population genetics (Danckwerts et al. 2016) have been conducted to assess the size of the population. Such an effort has provided a preliminary estimate of 15,000 to 20,000 breeding pairs, a larger number of mature individuals than previously reported. Nevertheless, previous estimates were based only on a partial knowledge of the species.
Trend justification: The species was suspected to be undergoing a long-term decline in line with increased juvenile mortality caused by disorientation resulting from light pollution. Both adults and chicks are also predated by introduced mammals (cats and rats) at breeding colonies.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Australia | extant | native | yes | |||
British Indian Ocean Territory | extant | native | yes | |||
Christmas Island (to Australia) | extant | native | yes | |||
Cocos (Keeling) Islands (to Australia) | extant | native | yes | |||
High Seas | extant | native | yes | |||
Indonesia | extant | vagrant | ||||
Madagascar | extant | native | yes | |||
Mauritius | extant | native | yes | |||
Mozambique | extant | vagrant | ||||
Réunion (to France) | extant | native | yes | |||
South Africa | extant | native | yes | |||
Sri Lanka | extant | vagrant |
Country/Territory | IBA Name |
---|---|
High Seas | Indian Ocean, Western 39 - Marine |
High Seas | Indian Ocean, Western 40 - Marine |
High Seas | Indian Ocean, Western 42 - Marine |
High Seas | Indian Ocean, Western 43 - Marine |
High Seas | Indian Ocean, Western 44 - Marine |
High Seas | Indian Ocean, Western 45 - Marine |
High Seas | Indian Ocean, Western 46 - Marine |
High Seas | Indian Ocean, Western 47 - Marine |
High Seas | Indian Ocean, Western 48 - Marine |
High Seas | Indian Ocean, Western 49 - Marine |
High Seas | Indian Ocean, Western 50 - Marine |
Réunion (to France) | Grand Bénard - Tapcal |
Réunion (to France) | Piton des Neiges - Gros Morne |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Montane | major | 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 |
Shrubland | Subtropical/Tropical High Altitude | major | breeding |
Altitude | 2200 - 3000 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | Minority (<50%) | Rapid Declines | Past Impact | ||||||
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Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Canis familiaris | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Capra hircus | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Rapid Declines | High Impact: 8 | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
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Pollution | Excess energy - Light pollution | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Barau's Petrel Pterodroma baraui. Downloaded from
https://datazone.birdlife.org/species/factsheet/baraus-petrel-pterodroma-baraui on 23/12/2024.
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 23/12/2024.