Justification of Red List Category
This species was endemic to the island of Réunion, but is now Extinct and has not been recorded since 1671-1672. Persecution is likely to have driven its decline.
See Geographic Range text.
Falco duboisi is known only from subfossil bones collected by Bertrand Kervazo in the Grottes des Premiers Français on Réunion (to France) in 1974 (Cowles 1994). The only historical record of small falcons is of the emerillons reported by Dubois in 1671-2 as distinct from pieds jaunes and papangue, both of which probably refer to Reunion Harrier Circus maillardi (Cowles 1987). The specimens are deposited in the Muséum National d'Histoire Naturelle, Paris (Cowles 1994).
It is likely to have occurred in open habitat throughout the island.
Reasons for its extinction are unknown, but persecution and the depredations of introduced human commensals are implicated.
Text account compilers
Brooks, T., Khwaja, N. & Mahood, S.
BirdLife International (2019) Species factsheet: Falco duboisi. Downloaded from http://www.birdlife.org on 22/11/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/11/2019.