LC
Fan-tailed Gerygone Gerygone flavolateralis



Taxonomy

Taxonomic note
Gerygone flavolateralis and G. citrina (del Hoyo and Collar 2016) were previously lumped as G. flavolateralis following Sibley and Monroe (1990, 1993).

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.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 358,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 5.5 years - - -

Population justification: The global population size has not been quantified, but the species is described as quite common on most islands (del Hoyo et al. 2007).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
New Caledonia (to France) extant native yes
Vanuatu extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
New Caledonia (to France) Aoupinié
New Caledonia (to France) Île d'Ouvéa
New Caledonia (to France) Île de Yandé
New Caledonia (to France) Boulinda
New Caledonia (to France) Bwa Opana
New Caledonia (to France) District de Wetr à Lifou
New Caledonia (to France) Entre les monts Nakada et Do
New Caledonia (to France) Entre les monts Rembaï et Canala
New Caledonia (to France) Entre Table Unio et Farino
New Caledonia (to France) Forêt Plate
New Caledonia (to France) Goro Até et haute vallée de la rivière Tchamba
New Caledonia (to France) Goro Jé et haute vallée de la rivière Amoa
New Caledonia (to France) Grand Koum
New Caledonia (to France) Hautes vallées des rivières Néaoua, Koua et Kouaoua
New Caledonia (to France) Massif du Mé Kanin, Sphinx et Arago
New Caledonia (to France) Massifs du Grand Sud - entre le mont Humboldt et la rivière Bleue
New Caledonia (to France) Mé Maoya
New Caledonia (to France) Pic Ningua
New Caledonia (to France) Prokoméo
Vanuatu Gaua
Vanuatu Ambrym West
New Caledonia (to France) Massif des Lèvres
New Caledonia (to France) Presqu'île de Pindaï
New Caledonia (to France) Massif du Panié
New Caledonia (to France) Dent de Saint-Vincent
Vanuatu Vanua Lava, Mount Sereama
Vanuatu West Malo
Vanuatu Neck of Malakula - Crab Bay
Vanuatu Vatthe
Vanuatu Santo Mountain Chain
Vanuatu Ambae

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Moist major resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Gerygone flavolateralis. Downloaded from https://datazone.birdlife.org/species/factsheet/fan-tailed-gerygone-gerygone-flavolateralis on 26/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 26/02/2024.