Data Zone
Justification of Red List category
Although this species may have a restricted range, it is not believed 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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to 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
There are estimated to be >86,000 individuals (del Hoyo et al. 2006), roughly equivalent to >57,000 mature individuals, so the population is placed in the band 50,000-99,999 mature individuals.
Trend justification
The population is suspected to be in decline owing to ongoing habitat destruction.
Text account compilers
Butchart, S., Ekstrom, J. & Khwaja, N.
Recommended citation
BirdLife International (2024) Species factsheet: Sumba Warbling-flycatcher Eumyias stresemanni. Downloaded from
https://datazone.birdlife.org/species/factsheet/sumba-warbling-flycatcher-eumyias-stresemanni on 22/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 22/12/2024.