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

Taxonomic source(s)
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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
A3ce	A3ce; C2a(ii)	A3ce; C2a(i,ii)

Red List history

Year	Category	Criteria
2018	Critically Endangered	A3ce
2016	Critically Endangered	A3ce
2015	Critically Endangered	A3ce
2013	Endangered	C2a(ii)
2012	Endangered	C2a(ii)
2008	Endangered	C2a(ii)
2006	Endangered
2004	Endangered
2000	Endangered
1996	Vulnerable
1994	Vulnerable
1988	Lower Risk/Least Concern

Migratory status	full migrant	Forest dependency	medium
Land-mass type	shelf island	Average mass	65 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	21,500 km2	medium
Extent of Occurrence (non-breeding)	2,040,000 km2	medium
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	1000-2499 mature individuals	medium	estimated	2011
Population trend	decreasing	medium	suspected	1998-2008
Rate of change over the future 10 years/3 generations (longer of the two periods)	80-95%	-	-	-
Generation length	5.4 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: Garnett et al. (2011) estimate that the current population probably contains around 2,000 mature individuals and is declining. It is placed in the band 1,000-2,499 mature individuals.

Trend justification: A population viability analysis model predicted that the population will decline by an average of 87% (79-95%) over three generations (12-18 years) (Heinsohn et al. 2015). The most likely scenario predicts a population decrease by 94.7% in three generations due to predation by Sugar Gliders Petaurus breviceps. The models represent a conservative, best-case scenario - other likely causes of mortality such as habitat loss and collisions with man-made structures were not included. Predation by Sugar Gliders is likely to be so severe that even successful breeding on offshore islands free of the predator will be insufficient to prevent an overall population decline.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Australia	extant	native	yes

Country/Territory	IBA Name
Australia	Bendigo Box-Ironbark Region
Australia	Brisbane Water
Australia	Bruny Island
Australia	Capertee Valley
Australia	Hastings-Macleay
Australia	Lake Macquarie
Australia	Lower Hunter Valley
Australia	Maria Island
Australia	Maryborough-Dunolly Box-Ironbark Region
Australia	Puckapunyal
Australia	Richmond Woodlands
Australia	Rushworth Box-Ironbark Region
Australia	South-east Tasmania
Australia	South-west Slopes of NSW
Australia	St Arnaud Box-Ironbark Region
Australia	Tuggerah
Australia	Ulladulla to Merimbula
Australia	Warby-Chiltern Box-Ironbark Region

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Pastureland	suitable	non-breeding
Artificial/Terrestrial	Pastureland	suitable	breeding
Artificial/Terrestrial	Urban Areas	suitable	non-breeding
Artificial/Terrestrial	Urban Areas	suitable	breeding
Forest	Subtropical/Tropical Dry	suitable	non-breeding
Forest	Subtropical/Tropical Dry	suitable	breeding
Forest	Temperate	major	non-breeding
Forest	Temperate	major	breeding
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Annual & perennial non-timber crops - Agro-industry farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Agro-industry plantations	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Hunting & trapping terrestrial animals - Intentional use (species is the target)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Human intrusions & disturbance	Work & other activities	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species disturbance
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Bombus terrestris	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Unknown		Unknown
		Stresses Competition
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Petaurus breviceps	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Sturnus vulgaris	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Unknown		Unknown
		Stresses Competition
Invasive and other problematic species, genes & diseases	Problematic native species/diseases - Named species	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Unknown		Unknown
		Stresses Competition
Invasive and other problematic species, genes & diseases	Viral/prion-induced diseases - Beak and Feather Disease Virus (BFDV)	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Negligible declines		Low Impact: 4
		Stresses Species mortality
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species mortality

Purpose	Scale
Pets/display animals, horticulture	international
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Swift Parrot Lathamus discolor. Downloaded from https://datazone.birdlife.org/species/factsheet/swift-parrot-lathamus-discolor on 26/12/2024.
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 26/12/2024.