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

Taxonomic source(s)
Brooks, T. 2000. Extinct species. In: BirdLife International (ed.), Threatened Birds of the World, pp. 701-708. Lynx Edicions and BirdLife International, Barcelona and Cambridge, U.K.
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., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
D	D	D1

Red List history

Year	Category	Criteria
2024	Extinct
2016	Extinct
2012	Extinct
2008	Extinct
2004	Extinct
2000	Extinct
1994	Extinct
1988	Extinct

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	-

	Estimate	Data quality
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	0 mature individuals	good	estimated	-
Population trend		-	-	-
Generation length	2.92 years	-	-	-

Population justification: No extant population remains.

Trend justification: Gerygone insularis was reportedly abundant until the Lord Howe Island was colonised by rats from a shipwreck in 1918. It was almost extinct by 1924 (Hume 2017) though reportedly still heard frequently in 1928 (Sharland 1929). It could not be found on a visit in 1936 (Hindwood 1940), and there are no subsequent records (Recher and Clark 1974).

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Temperate	major	resident
Altitude		Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Rattus rattus	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Whole (>90%)		Rapid Declines		Past Impact
		Stresses Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Unspecified species	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Unknown		Unknown		Past Impact
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Lord Howe Gerygone Gerygone insularis. Downloaded from https://datazone.birdlife.org/species/factsheet/lord-howe-gerygone-gerygone-insularis 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.