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

Taxonomic note
Poodytes punctatus and P. caudatus (del Hoyo and Collar 2016) were previously lumped as Bowdleria punctata following Sibley & Monroe (1990, 1993) and Turbott (1990).

Taxonomic source(s)
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
-	-	D2

Red List history

Year	Category	Criteria
2022	Vulnerable	D2
2016	Vulnerable	D2
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	12 km2
Area of Occupancy (breeding/resident)	12 km2
Number of locations	3	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2000-3500, 3000 mature individuals	medium	estimated	2022
Population trend	stable	-	estimated	-
Generation length	2.4 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: This species has a very small range of just c.3.3 km² of vegetated habitat in its range. Miskelly et al. (2001) found it to be the commonest landbird and abundant across its limited range at an approximated density of 8 pairs/hectare, equivalent to 2,640 mature individuals, similar to the estimation by Richdale (1948) of 10 pairs/hectare, equivalent to 3,300 mature individuals. The population is thought to be stable and is therefore estimated at 2,000-3,500 mature individuals, with a best estimate of 3,000.

Trend justification: The population density appears to have remained fairly stable since the late 1940s (Miskelly et al. 2001). Overall the population is considered to have been stable within the last ten years (Robertson et al. 2013, 2017, 2021).

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

Country/Territory	IBA Name
New Zealand	Snares (eastern islands)

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Marine Intertidal	Salt Marshes (Emergent Grasses)	suitable	resident
Shrubland	Temperate	suitable	resident
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	major	resident
Wetlands (inland)	Shrub Dominated Wetlands	suitable	resident
Altitude	0 - 130 m	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 - Unspecified species	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Very Rapid Declines		Medium Impact: 7
		Stresses Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: Snares Fernbird Poodytes caudatus. Downloaded from https://datazone.birdlife.org/species/factsheet/snares-fernbird-poodytes-caudatus on 27/12/2024.
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 27/12/2024.