LC
Samoan Flycatcher Myiagra albiventris



Taxonomy

Taxonomic note
Monotypic.

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
2024 Least Concern
2016 Near Threatened B1ab(iii); C2a(i)
2012 Near Threatened B1ab(iii);C2a(i)
2011 Near Threatened B1a+b(iii); C2a(i)
2008 Vulnerable A2c; A3c; A4c
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Lower Risk/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) 4,680 km2 medium
Area of Occupancy (breeding/resident) 3,216 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 14000-20000 mature individuals good estimated 2016
Population trend stable poor suspected -
Generation length 3.38 years - - -
Number of subpopulations 2-3 - - -

Population justification: This species is considered common and widespread (Pratt et al. 1987, Butler 2012, Parrish and Sherley 2012, Pratt and Mittermeier 2016, O'Brien and Masibalavu 2017). Based on density estimates from 2016 the population is estimated to fall within the band 14,000-20,000 mature individuals, depending on the assumptions used (O'Brien and Masibalavu 2017).

Trend justification: It is suspected to have declined following the cyclones of 1990–1991 which substantially reduced forest cover, with the species subsequently becoming uncommon and difficult to find (Pratt and Mittermeier 2016). However, the species is not strictly reliant on primary forest and favours shrubby forest with many young trees; it appears to have recovered from apparent declines and is considered common and widespread (Butler 2012, Parrish and Sherley 2012, Pratt and Mittermeier 2016, O'Brien and Masibalavu 2017). Surveys conducted in 2009 suggested at least a moderate and localised recovery, with 'healthy' populations of 20-30 birds recorded and anecdotal observations of birds along roadsides and near habitation (Schuster 2010). Additionally, it was found to be common in mangroves and disturbed habitat around villages and plantations in 2005-2006. Its preference for secondary habitat and forest edge, as well as its occurrence in a variety of habitat types, suggests resilience to habitat loss and disturbance (Pratt and Mittermeier 2016, J. Pilgrim in litt. 2024). As such, although small-scale agricultural encroachment and invasive species persist within the range, these are unlikely to be driving declines. Tentatively therefore, the population trend is suspected to be stable.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Samoa Aleipata Marine Protected Area
Samoa Apia Catchments
Samoa Central Savaii Rainforest
Samoa Eastern Upolu Craters
Samoa O Le Pupu-Pu'e National Park
Samoa Uafato-Tiavea Forest

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 0 - 1200 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Shifting agriculture Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Ecosystem degradation
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Ecosystem degradation
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Causing/Could cause fluctuations Past Impact
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases - Unspecified species Timing Scope Severity Impact
Ongoing Majority (50-90%) No decline Low Impact: 5
Stresses
Indirect ecosystem effects, Ecosystem degradation, Reduced reproductive success, Species mortality

Recommended citation
BirdLife International (2024) Species factsheet: Samoan Flycatcher Myiagra albiventris. Downloaded from https://datazone.birdlife.org/species/factsheet/samoan-flycatcher-myiagra-albiventris on 23/12/2024.
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 23/12/2024.