Justification
This species is listed as Near Threatened because there are some indications that it has a small population within a small range, which is undergoing some decline owing to habitat loss; however, few recent data are available on the size and structure of the population, and threats to this species. Further information may indicate that it should be uplisted to a higher threat category.
Taxonomic source(s)
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Distribution and populationPrioniturus waterstradti is endemic to Mindanao,
Philippines, where it is known from nine montane localities: Mt Hilong-hilong, Mt Mayo, Anakan and Civolig near Gingoog City, Mt Kitanglad, Mt Apo, Mt Matutum, Lake Sebu, and Mt Malindang. The notion that it is local and uncommon, apparently occurring at lower density than some of its congeners, appears to be over-cautious, with evidence to the contrary coming from several sources old and new. Moreover, montane habitats are relatively secure compared to lower formations. The population was estimated in 1993 at c.5,000 individuals and declining (Lambert
et al. 1993)
.
Population justificationIn 1993, the population was estimated to number c.5,000 individuals (Lambert
et al. 1993)
, probably including c.3,300 mature individuals.
Trend justificationThe population is suspected to be in decline owing to on-going forest degradation and trapping for the cagebird trade.
EcologyIt inhabits humid montane forest at 820-2,700 m, but it has been recorded as low as 450 m. It occurs in groups of 2-10 individuals and apparently undertakes daily altitudinal migrations. The nest is built 5-7 m above the ground (Schnitker 2008).
ThreatsForest loss may represent a threat but it is not thought to have a significant impact within this species's alititudinal range. Many parrots in the region are affected by trapping for trade, but its impacts upon this species are not known.
Conservation actions underwayCITES Appendix II.
Conservation actions proposedGather data on the impacts of international and national trade. Revise the population estimate. Calculate rates of forest loss within its altitudinal and geographic range using satellite imagery and remote sensing techniques. Effectively protect significant areas of suitable forest at key sites, in both strictly protected areas and community led multiple use areas.
References
Lambert, F.; Wirth, R.; Seal, U. S.; Thomsen, J. B.; Ellis-Joseph, S. 1993. Parrots: an action plan for their conservation 1993-1998.
Collar, N. J.; Mallari, N. A. D.; Tabaranza, B. R. J. 1999. Threatened birds of the Philippines: the Haribon Foundation/BirdLife International Red Data Book. Bookmark, Makati City.
Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).
Hear sounds for this species from xeno-canto, the community database of shared bird sounds from around the world.
View photos and videos, and hear sounds of this species from the Internet Bird Collection
Text account compilers
Benstead, P., Bird, J., Khwaja, N., Taylor, J.
IUCN Red List evaluators
Butchart, S., Symes, A.
Recommended citation
BirdLife International (2013) Species factsheet: Prioniturus waterstradti. Downloaded from
http://www.birdlife.org on 20/06/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 20/06/2013.
This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
Additional resources for this species
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