Justification of Red List Category
This species was known from Tahiti, French Polynesia, but it has not been recorded since a specimen was collected in 1777, and is now Extinct. Predation by introduced rats is likely to have been the primary driver.
Prosobonia leucoptera was endemic to Tahiti, in the Society Islands, French Polynesia (Pratt et al. 1987). The type was collected by Forster and painted by his son in 1773; the specimen is now in Leiden and the painting in London (Walters 1994). Another specimen, now lost, was taken in 1777 (Greenway 1967).
All that is known of the species's ecology is that Forster noted that the birds occurred along highland streams (Walters 1994).
Its extinction was probably caused by introduced rats (Greenway 1967).
Text account compilers
Brooks, T., Khwaja, N., Mahood, S., Martin, R
BirdLife International (2019) Species factsheet: Prosobonia leucoptera. Downloaded from http://www.birdlife.org on 16/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/06/2019.