| Citation |
BirdLife International 2017. Butastur liventer (amended version of 2017 assessment). The IUCN Red List of Threatened Species 2017: e.T22695721A118854457. http://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T22695721A118854457.en. Downloaded on 14 October 2019. |
Description |
JUSTIFICATION
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.
DESCRIPTION
The population is estimated to number 1,000-10,000 individuals, roughly equivalent to 670-6,700 mature individuals.
Trend Justification: The population is suspected to be in decline owing to ongoing habitat destruction even thought it seems able to tolerate some habitat degradation and agricultural conversion (Ferguson-Lees and Christie 2001). |
