LC
Mayr's Forest-rail Rallicula mayri



Justification

Justification of Red List Category
Although this species has a restricted range, it is not thought to approach the thresholds for Vulnerable under the range size criterion (extent of occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population justification
It inhabits areas which are very rarely visited but is likely to prove to be locally common as with other New Guinea congeners (Coates 1985, Beehler et al. 1986). It was recorded as common in the Bewani and Torricelli (J. Diamond in litt. 1987, Collar et al. 1994) but this was based on seven specimens taken in 1966 (Diamond 1969) and it has not been recorded (or searched for) there subsequently. In the Cyclops, it is known from four specimens (Diamond 1969) and was not found during fieldwork in 1992 (K. D. Bishop in litt. 1996). It was common to uncommon from 1,198–1,680 m in the Foja Mountains in 2005-2009 (Beehler et al. 2012), confirming provisional records there in 1979 and 1981 (Diamond 1985).

Trend justification
The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Distribution and population

Rallicula mayri occurs in the isolated mountain ranges of Foja, Cyclops, Bewani and Torricelli of north New Guinea (Papua, formerly Irian Jaya, Indonesia and Papua New Guinea). It inhabits areas which are very rarely visited but is likely to prove to be locally common as with other New Guinea congeners (Coates 1985, Beehler et al. 1986). It was recorded as common in the Bewani and Torricelli (J. Diamond in litt. 1987, Collar et al. 1994) but this was based on seven specimens taken in 1966 (Diamond 1969) and it has not been recorded (or searched for) there subsequently. In the Cyclops, it is known from four specimens (Diamond 1969) and was not found during fieldwork in 1992 (K. D. Bishop in litt. 1996). It was common to uncommon from 1,198–1,680 m in the Foja Mountains in 2005-2009 (Beehler et al. 2012), confirming provisional records there in 1979 and 1981 (Diamond 1985).

Ecology

It inhabits montane forest between 1,100-2,070 m (Beehler and Pratt 2016).

Threats

Its montane habitat is likely to be safe from logging and there are no other known threats to this species (J. Diamond in litt. 1987).

Conservation actions

Conservation Actions Underway
None is known.

Conservation Actions Proposed
Survey historical locations and potentially suitable habitats for the species and establish identity of rails seen in Foja mountains. Study its ecological requirements and threats.

Acknowledgements

Text account compilers
Dutson, G., Symes, A., Wheatley, H., Derhé, M.

Contributors
Bishop, K.D., Diamond, J.


Recommended citation
BirdLife International (2019) Species factsheet: Rallicula mayri. Downloaded from http://www.birdlife.org on 20/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/03/2019.