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White-capped Albatross Thalassarche steadi

IUCN Red List Criteria

Near Threatened (criteria nearly met) A4de 

IUCN Red List history

Year Category
2013 Near Threatened
2012 Near Threatened
2010 Near Threatened
2008 Near Threatened
2007 Near Threatened
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type shelf island
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 540 medium
Extent of Occurrence non-breeding (km2) 77,700,000 medium
Area of Occupancy breeding/resident (km2) 540 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 200000 good Estimated 2012
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 23.1 - - -
Population justification: The annual breeding population was estimated at 100,501 pairs in 2012, but in recent years estimates have ranged from as high as 116,025 pairs in 2006 and as few as 73,838 in 2009. The 2012 estimate equates to c.201,000 mature individuals, but this species is now considered to be a biennial breeder, meaning that the total population may in fact be much larger.
Trend justification: Pre-2006/2007 population estimates were not based on comparable methodologies to current census methods and therefore population trends cannot be calculated before this time. Counts since then are comparable with current estimates and appeared to indicate a rapidly declining population (117,197 pairs in 2007 and 77,005 pairs in 2011, for the Auckland Islands excluding Adams Island, where there is a very small population - 117 pairs in 2011). However, numbers in 2012 were larger (100,501 pairs) and estimates between 2006-212 showed very high inter-annual variability (the species is now considered to be a biennial breeder). Whilst a TRIM (TRends and Indices for Monitoring data) analysis of annual estimates of breeding pairs between 2006-2012 found a moderate decline (-2.19% per year), trend analysis using smoothing splines - which is considered to be more appropriate to data sets with high inter-annual variability - showed no evidence for a systematic monotonic decline over this period, suggesting that the population may be stable (Baker et al. 2013, I. Debski in litt. 2013). Further data are therefore required to confirm the population trend, which is currently precautionarily retained as a moderately rapid ongoing decline given the considerable numbers recorded as bycatch in fisheries.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Unknown Extant        
Argentina Unknown Extant        
Australia Native Extant   Yes    
Brazil Unknown Extant        
Chile Unknown Extant        
Falkland Islands (Malvinas) Unknown Extant        
French Southern Territories Unknown Extant        
Heard Island and McDonald Islands (to Australia) Unknown Extant        
Madagascar Unknown Extant        
Mauritius Unknown Extant        
Mozambique Unknown Extant        
Namibia Native Extant   Yes    
New Zealand Native Extant Yes      
Norfolk Island (to Australia) Unknown Extant        
Peru Unknown Extant        
Réunion (to France) Unknown Extant        
South Africa Native Extant   Yes    
South Georgia & the South Sandwich Islands Unknown Extant        
St Helena (to UK) Unknown Extant        
Uruguay Unknown Extant        

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subantarctic major breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major breeding
Marine Neritic Macroalgal/Kelp suitable breeding
Marine Neritic Macroalgal/Kelp suitable non-breeding
Marine Neritic Pelagic major breeding
Marine Neritic Pelagic major non-breeding
Marine Neritic Seagrass (Submerged) suitable breeding
Marine Neritic Seagrass (Submerged) suitable non-breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel suitable breeding
Marine Neritic Subtidal Loose Rock/pebble/gravel suitable non-breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable breeding
Marine Neritic Subtidal Rock and Rocky Reefs suitable non-breeding
Marine Neritic Subtidal Sandy suitable breeding
Marine Neritic Subtidal Sandy suitable non-breeding
Marine Neritic Subtidal Sandy-Mud suitable breeding
Marine Neritic Subtidal Sandy-Mud suitable non-breeding
Marine Oceanic Epipelagic (0-200m) major breeding
Marine Oceanic Epipelagic (0-200m) major non-breeding
Marine Oceanic Mesopelagic (200-1000m) major breeding
Marine Oceanic Mesopelagic (200-1000m) major non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

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%) Slow, Significant Decline Medium Impact: 6
Stresses
Indirect ecosystem effects, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Pig (Sus domesticus) Timing Scope Severity Impact
Past, Unlikely to Return Minority (<50%) Slow, Significant Decline Past Impact
Stresses
Ecosystem degradation, Reduced reproductive success

Recommended citation
BirdLife International (2014) Species factsheet: Thalassarche steadi. Downloaded from http://www.birdlife.org on 30/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/09/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Near Threatened
Family Diomedeidae (Albatrosses)
Species name author Falla, 1933
Population size 200000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 540 km2
Country endemic? Yes
Links to further information
- Summary information on this species