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

Taxonomic note

Goodfellowia miranda (del Hoyo and Collar 2016) was previously listed as Basilornis mirandus.

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
-	-	-

Red List history

Year	Category	Criteria
2023	Near Threatened	B1b(iii)
2016	Near Threatened	B1ab(iii)
2012	Near Threatened	B1ab(iii)
2008	Near Threatened	B1a+b(iii)
2004	Near Threatened
2000	Lower Risk/Near Threatened
1994	Lower Risk/Near Threatened
1988	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	9,200 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	2016-2028
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	3.9 years	-	-	-
Number of subpopulations	4	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: The population size of this species has not been quantified. Allen (2020) described it as 'locally common' and noted it is sometimes observed in flocks of 20-50. On Mt Apo, it had a comparatively high encounter rate within protected and unprotected areas (Vergara et al. 2018). Approximately 5,000 km² of forest remains in its mapped range (per Global Forest Watch 2023), however, only a portion of this is likely to be occupied. Nonetheless, it seems unlikely that the population size of this species is especially small.

Trend justification: It is suspected to be declining (as predicted by Zhang et al. 2022), however only slowly. The main threat to this species is habitat loss, with no indication it is yet captured for the pet trade (at least not on a scale causing wild population declines). In the three generations (11.7 years; Bird et al. 2020) to 2021, forest loss in this species' range was equivalent to c.4% (Global Forest Watch 2023, based on data from Hansen et al. (2013) and methods disclosed therein). The exact impact on the species is difficult to determine: it appears to be somewhat tolerant edge and disturbance (Allen 2020, eBird 2023), however would undoubtedly be susceptible to slash-and-burn agriculture, which removes all suitable habitat for this species. The rate of decline is therefore set to a suspected rate of 1-9% over three generations.

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

Country/Territory	IBA Name
Philippines	Mount Apo
Philippines	Mount Balatukan
Philippines	Mount Kitanglad

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	1250 - 2700 m	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		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Apo Myna Goodfellowia miranda. Downloaded from https://datazone.birdlife.org/species/factsheet/apo-myna-goodfellowia-miranda on 22/11/2024.
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 22/11/2024.