Justification of Red List Category
This newly-split species is estimated to have a small population which is suspected to be undergoing moderately rapid population declines owing to trapping pressure for the wild bird trade. It is therefore classified as Vulnerable.
The population size is estimated to number fewer than 10,000 mature individuals, based on a tentative assessment of the locations likely to retain any numbers of the species. It is further considered possible that the assumed largest population on Sumbawa may well not exceed 1,000 mature individuals.
The population is suspected to be undergoing a moderately rapid decline owing to unsustainable levels of exploitation.
T. forsteni (incorporating mitchelli, djampeanus and stresemanni) is found on the islands of Bali, Lombok, Sumbawa, Tanahjampea and Kalaotoa, Indonesia. An evaluation of the status of the taxa comprising the species indicates that the species may now no longer occur on Bali, has become extinct on Tanahjampea following trapping principally prior to 1990 and it is unclear if it persists on Kalatoa (Eaton et al. 2015). On Lombok the species does still occur, with a recent observation of a flock of 18 above 1,500 m in 2015 (F. Rheindt per Eaton et al. 2015), though given the lack of other records for many decades it can be assumed that the population is likely to be small. Sumbawa may now be the stronghold of the species, and the species was suggested to be ‘secure’ (Eaton et al. 2015), and there is a large area of potentially suitable habitat remaining on the island.
Found in lowland and lower montane forest, including secondary growth and plantations, tending to occur at edges and around disturbed vegetation rather than in interior closed-canopy forest (del Hoyo et al. 1997). On Sumbawa T. forsteni ranges from sea level up to 800-1200 m and to 2150 m on Lombok (del Hoyo et al. 1997); at least on Sumbawa variation in altitudinal range is ascribed to movements made in tracking flowering trees over a large area (White and Bruce 1986). Birds have been reported in breeding condition in May from Sumbawa (White and Bruce 1986). Nests in a deep hole in a large tree (del Hoyo et al. 1997).
The primary threat is trapping for trade.
Conservation and research actions underway
CITES Appendix II. CMS Appendix II.
Conservation and research actions proposed
Estimate population and assess population trend and scale of trapping pressure. Conduct a targeted survey for the species to identify important sites, with a view to affording them protection. Conduct research into its status and habitat use (with particular regard to feeding ecology and forest fragmentation). Initiate awareness campaigns to elicit the support of local people in protecting forests and preventing illegal trade.
25-30 cm. Distinctive, colourful parakeets with a dark blue head, pale green collar, plain red breast, and dark blue belly. Rest of the plumage is a bright pale green, and the typical parakeet bill is red. In flight the species shows a bright yellow wing flash across the inner part of all flight feathers, and deep red underwing coverts. Similar spp. None in range, but previously included with T. haematodus along with T. capistratus, T. weberi, T. rubritorquis, T. moluccanus, and T. rosenbergii. It is distinct from all of these in the combination of plain red breast, dark blue belly, and virtually unstreaked dark blue head. Voice. A harsh, repeated screech keek, keek, keek... in flight; twittering and chattering when settled.
Text account compilers
Butchart, S., Ekstrom, J., Harding, M., Martin, R, Stattersfield, A., Symes, A. & Taylor, J.
Chng, S. & Eaton, J.
BirdLife International (2020) Species factsheet: Trichoglossus forsteni. Downloaded from http://www.birdlife.org on 25/01/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/01/2020.