• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
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.
Robertson, C. J. R.; Nunn, G. B. 1998. Towards a new taxonomy for albatrosses. In: Robertson, G.; Gales, R. (ed.), Albatross biology and conservation, pp. 13-19. Surrey Beatty & Sons, Chipping Norton, Australia.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Near Threatened	D2
2016	Near Threatened	D2
2012	Near Threatened	D2
2010	Near Threatened	D2
2008	Near Threatened	D2
2007	Near Threatened
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

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

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	34,500,000	medium
Number of locations	3	-
Fragmentation		-

	Estimate	Data quality	Derivation	Year of estimate
No. of mature individuals	30700	poor	estimated	2009
Population trend	Unknown	poor		-
Decline (3 years/1 generation past)		-	-	-
Decline (5 years/1 generation past)		-	-	-
Decline (10 years/1 generation past)		-	-	-
Decline (10 years/3 generation future)		-	-	-
Decline (10 years/3 generation past and future)		-	-	-
Number of subpopulations	1	-	-	-
Largest subpopulations	100	-	-	-
Generation length (yrs)	23.1	-	-	-

Population justification: The global population of Shy Albatross was estimated to be 12,000 to 19,000 pairs in 2009 (Alderman et al. 2011). Data submitted to ACAP estimated a total population of 15,350 pairs, made up of 5,200 pairs on Albatross Island (in 2010) (Alderman et al. 2011), 7,600-12,400 pairs on Mewstone (in 2005) (Alderman et al. 2011), and 130-170 pairs on Pedra Branca (in 2009) (Alderman et al. 2011). The number of mature individuals is therefore estimated at c.30,700. The global population including non-breeders is now estimated to be 60,000-70,000 individuals.

Trend justification: Without knowing the population trend on Mewstone, or the historic population size on Pedra Branca, overall trend over a three generation period (66 years) cannot be accurately assessed.

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

Country/Territory	IBA Name

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

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 Declines		Medium Impact: 6
		Stresses Species mortality
Climate change & severe weather	Storms & flooding	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Causing/Could cause fluctuations		Low Impact: 5
		Stresses Reduced reproductive success
Invasive and other problematic species, genes & diseases	Problematic native species/diseases - Morus serrator	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Competition, Reduced reproductive success
Invasive and other problematic species, genes & diseases	Viral/prion-induced diseases - Avipoxvirus	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Causing/Could cause fluctuations		Low Impact: 5
		Stresses Reduced reproductive success

Purpose	Primary form used	Life stage used	Source	Scale	Level	Timing
Handicrafts, jewellery, etc.	-	-		International	Non-trivial	Recent

---

Recommended citation
BirdLife International (2020) Species factsheet: Thalassarche cauta. Downloaded from http://www.birdlife.org on 22/01/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/01/2020.