Data Zone
Justification of Red List category
This striking species is confined to only four mountains on Mindanao, the Philippines, and has a small range. It occurs in the most remote and untouched forests of the Philippines, thus has been largely impervious to lowland forest loss that has caused many other Mindanao species to decline sharply. Nonetheless, habitat loss and degradation are occurring at the lowest elevations of this species' range and this must continue to be monitored since any increase in the rate of human intrusion could have a significant negative effect. Accordingly it is listed as Near Threatened.
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.
Goodfellowia miranda is endemic to Mindanao, Philippines, where it is known from just four mountains: Apo, Kitanglad, Mangabon and Balatukan (Collar et al. 1999, Allen 2020).
This species is found above 1,250 m in forest and forest edge, even in cut-over areas.
The habitats occupied by this species are mostly secure as a result of their rugged and inaccessible nature. However, some logging and clearance for agriculture has occurred in lower parts of the elevational range (Global Forest Watch 2023). As a montane species, it may be susceptible to climate change, but there is not yet any evidence that this is impacting it.
Conservation Actions Underway
None specific to this species is known. Parts of its range are protected (e.g. Mt Apo Natural Park) but this species also occurs in areas not in the Philippines' protected area network (Vergara et al. 2018).
Conservation Actions Proposed
Conduct surveys to accurately determine its population size. Establish if it occurs on any other mountains on Mindanao. Continue to monitor habitat trends using remote sensing data. Gazette as much of its range into protected areas as is possible and ensure these are adequately safeguarded against logging and agricultural encroachment.
Text account compilers
Berryman, A.
Contributors
Benstead, P., Gilroy, J. & Khwaja, N.
Recommended citation
BirdLife International (2024) Species factsheet: Apo Myna Goodfellowia miranda. Downloaded from
https://datazone.birdlife.org/species/factsheet/apo-myna-goodfellowia-miranda 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.