BirdLife Species factsheet for Mayr’s Forest-rail: http://datazone.birdlife.org/species/factsheet/mayrs-forest-rail-rallicula-mayri
Mayr’s Forest-rail, Rallicula mayri, is currently listed as Data Deficient. This species was formerly known from specimens from montane forest in the north of New Guinea (Cyclops, Bewani, and Torricelli) in both Indonesia and Papua New Guinea. In the Cylcops Mountains it was known from four specimens (Diamond 1969), but subsequent work in 1992 failed to find it (K. D. Bishop in litt. 1996). It was described as common in the Bewani and Torricelli Mountains based on the specimens collected in 1966 (Diamond 1969, Collar et al. 1994, J. Diamond in litt. 1987), though there have been no further searches for the species there.
Research conducted in the Foja Mountains in 2005-2009 found this species to be common to uncommon at elevations of 1,198-1,680 m (Beehler et al. 2012), thus confirming previous records from there in 1979 and 1981 (Diamond 1985). The fact that it inhabits areas which are rarely visited increase the likelihood that it may be locally common, as is the case with other New Guinea congeners (Coates 1985, Beehler et al. 1986). There are minimal threats to this species as it inhabits such isolated high altitude mountains, and hence the population is suspected to be stable. Therefore, this species is not thought to approach the threshold for Vulnerable under any criterion, and so would warrant listing as Least Concern.
We welcome any comments or further information regarding this proposed listing.
Beehler, B. M.; Diamond, J. M.; Kemp, N.; Scholes III, E.; Milensky, C.; Laman, T. G. 2012. Avifauna of the Foja Mountains of western New Guinea. Bull. B.O.C. 132: 84-101.
Beehler, B. M.; Pratt, T. K.; Zimmerman, D. A. 1986. Birds of New Guinea. Princeton University Press, Princeton.
Coates, B. J. 1985. The birds of Papua New Guinea, 1: non-passerines. Dove, Alderley, Australia.
Collar, N. J.; Crosby, M. J.; Stattersfield, A. J. 1994. Birds to watch 2: the world list of threatened birds. BirdLife International, Cambridge, U.K.
Diamond, J. M. 1969. Preliminary results of an ornithological exploration of the North Coastal Range, New Guinea. American Museum Novitates 2362: 1-57.
Diamond, J. M. 1985. New distributional records and taxa from the outlying mountain ranges of New Guinea. Emu 85: 65-91.