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Range DescriptionPtilinopus arcanus is endemic to the Philippines, where it is known only by a single female specimen (one of a pair) collected on Mt Canlaon on the island of Negros in 1953 (Collar et al. 1999).Its population is unknown and, given the failure of any fieldworker to encounter it since its discovery, it must be extremely rare. However, the recent discovery on Panay of threatened species which, until 1990, were known only from Negros, and sometimes formerly Guimaras (e.g. Negros Bleeding-heart Gallicolomba keayi and White-throated Jungle-flycatcher Rhinomyias albigularis), suggests that it is not impossible that this enigmatic bird may be extant.Three birds that fit the species's description were reportedly shot by hunters in 1985 and 2008 in Mantiquil and near Mt Canlaon respectively (Collar and Lambert 2013).Fruit-doves in the Philippines are extremely shy, thus it is quite possible that even on Negros this species might be overlooked, and the extensive forests of Panay which have yet to be surveyed by experienced field-workers might harbour the species (R. Hutchinson in litt. 2013).