Data Zone
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 |
| 2007 | Vulnerable | |
| 2005 | Critically Endangered | |
| 2004 | Critically Endangered | |
| 2000 | Critically Endangered | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| 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) | 13,700,000 km2 | medium |
| Area of Occupancy (breeding/resident) | 9 km2 | medium |
| Number of locations | 1 | - |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 20000 mature individuals | medium | estimated | 2010 |
| Population trend | increasing | medium | estimated | 1931-2010 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Generation length | 25.9 years | - | - | - |
| Number of subpopulations | 1 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: 14,400 nesting burrows were counted on Inaccessible Island in 2009-2010 (Ryan and Ronconi 2011). Assuming a burrow occupancy of 90%, this equates to a breeding population of approximately 20,000 breeding birds. The overall population is estimated at around 38,000 ± 7,000 individuals; 7,000 individuals were present at sea off Brazil based on survey data from 1997-1999 (L. Bugoni in litt. 2006).
Trend justification: Between 1999-2004, the numbers of breeders may have increased by up to 45% (Ryan et al. 2006), but the toll taken by bycatch in longline fisheries is poorly understood. Bycatch may affect juveniles disproportionately more than adults; a bias that will not be reflected at the breeding grounds for several years.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Angola | extant | vagrant | ||||
| Argentina | extant | native | yes | |||
| Australia | extant | vagrant | ||||
| Brazil | extant | native | yes | |||
| High Seas | extant | native | yes | |||
| Namibia | extant | native | yes | |||
| South Africa | extant | native | yes | |||
| St Helena (to UK) | extant | native | yes | |||
| Uruguay | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| St Helena (to UK) | Inaccessible Island |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Neritic | Pelagic | major | breeding |
| Marine Neritic | Pelagic | major | non-breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | non-breeding |
| Marine Oceanic | Epipelagic (0-200m) | major | breeding |
| Shrubland | Temperate | major | breeding |
| Altitude | 250 - 500 m | Occasional altitudinal limits | (min) 0 m |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
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| Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Sus domesticus | Timing | Scope | Severity | Impact | ||||
| Past, Unlikely to Return | Whole (>90%) | Rapid Declines | Past Impact | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Spectacled Petrel Procellaria conspicillata. Downloaded from
https://datazone.birdlife.org/species/factsheet/spectacled-petrel-procellaria-conspicillata on 22/12/2024.
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 22/12/2024.