Justification This species is listed as Near Threatened because there are some indications that it has a moderately small, fragmented population within a restricted range, which is undergoing some decline owing to habitat loss. However, little recent data is available about the population size and structure of, and threats to, this species. Further information may indicate it is more threatened.

Family/Sub-family Psittacidae

Species name author Rothschild, 1904

Taxonomic source(s) Sibley and Monroe (1990, 1993)

Identification

Population estimate

Population trend

Range estimate (breeding/resident)

Country endemic?

5,000

unset

-

Yes

Range & population Prioniturus waterstradti is endemic to Mindanao, Philippines, where it is known from nine montane localities, as follows: 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 declining¹.

Ecology: It 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.

Threats Forest 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 measures underway CITES Appendix II.

Conservation measures proposed Gather 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 Collar et al. (1999). 1. Lambert et al. (1993).

Further web sources of information

Fully detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001), together with new information collated since the publication of the Red Data Book

Text account compilers Phil Benstead (BirdLife International), Jeremy Bird (BirdLife International)

IUCN Red List evaluators Jeremy Bird (BirdLife International), Stuart Butchart (BirdLife International), Mike Crosby (BirdLife International)

Recommended citation BirdLife International (2009) Species factsheet: Prioniturus waterstradti. Downloaded from http://www.birdlife.org on 10/2/2010

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.

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