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Range DescriptionPtilinopus roseicapilla is fairly common on four islands in the Northern Mariana Islands (to USA), where it is primarily a bird of mature forest although it is also found in some moderately disturbed mixed woodland and second growth habitats (Engbring et al. 1982, Jenkins 1983, Craig 1996). It has become extirpated from Guam (to USA) owing to predation by the introduced brown tree snake Boiga irregularis, and although single birds turn up once every few years, these are almost certainly individuals dispersing from the island of Rota, 60 km to the north (G. Wiles in litt. 1999). In 1982, the total population was estimated at 9,443 birds, with 2,541 on Saipan, 3,075 on Tinian, 3,535 on Rota and 292 on Aguijan (Engbring et al. 1982). Surveys conducted over the last decade indicate that the species has increased on Aguijan (data from 2008 [Amidon et al. in prep]), declined on Rota (data from 2003 [Amar et al. 2008]) and Tinian (data from 2008, [Camp et al. in press]), and appears stable on Saipan (data from 2007 [Camp et al. 2009]). A recent "Promoting Protection through Pride" campaign on Rota has resulted in legislation fully protecting the species from hunting and trapping (T. Holm in litt. 2000). However, the species must be affected by habitat loss and is at great risk from the recent introduction of B. irregularis to Saipan, and the likely introduction to Tinian.