Justification of Red List Category
This species has an extremely large range, and hence does not 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 may be small, 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.
The population is estimated to number 1,000-10,000 individuals, roughly equating to 670-6,700 mature individuals.
The population is declining owing to habitat loss and degradation. The population may also be declining locally owing to Poisoning of carcasses and egg collecting (Ferguson-Lees and Christie 2001).
Text account compilers
Ekstrom, J., Butchart, S., Harding, M.
BirdLife International (2019) Species factsheet: Hamirostra melanosternon. Downloaded from http://www.birdlife.org on 16/01/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/01/2019.