Current view: Data table and detailed info
Taxonomic note
Ceyx lepidus, C. margarethae, C. wallacii, C. cajeli, C. solitarius, C. dispar, C. mulcatus, C. sacerdotis, C. meeki, C. collectoris, C. nigromaxilla and C. gentianus (del Hoyo and Collar 2014) were previously lumped as C. lepidus following Sibley and Monroe (1990, 1993).
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
IUCN Red list criteria met and history
Red List criteria met
Red List history
Migratory status |
not a migrant |
Forest dependency |
Medium |
Land mass type |
|
Average mass |
19 g |
Population justification: The population size has not been estimated following recent taxonomic splits, but the species occurs at low densities (G. Dutson in litt. 2012) and the overall population is presumed to be moderately small. On neighbouring New Guinea, C. solitarius has been recorded at densities of 10 birds/km2 (Bell 1982). Approximately 1,700 km2 of forest cover remained on Manus in 2021; consequently, assuming a comparable density and an occupancy rate of 10–50%, the population is inferred to be 1,700–8,500 birds, or 1,100–5,600 mature individuals, with a best estimate of 2,500–5,000 mature individuals. Confirmation and clarification on this total is urgently needed.
Trend justification:
The island of Manus is rarely visited by ornithologists, hence a direct population decline has never been elucidated. However, the population is suspected to be slowly declining on the basis of forest loss on the island, the rate of which is estimated at c.2% over the past ten years (data from Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein).
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2023) Species factsheet: Ceyx dispar. Downloaded from
http://www.birdlife.org on 29/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 29/03/2023.