| Citation |
BirdLife International. 2017. Acrocephalus concinens (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T22714719A111097943. https://dx.doi.org/10.2305/IUCN.UK.2017-1.RLTS.T22714719A111097943.en. Downloaded on 09 May 2020. |
Description |
JUSTIFICATION
This species has a very 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). 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.DESCRIPTION
The global population size has not been quantified, but the species is described as a locally fairly common breeder in the western Himalayas; a rare summer visitor in Pakistan and uncommon in South-East Asia (del Hoyo et al. 2006). The population in China has been estimated at c.100-10,000 breeding pairs and c.50-1,000 individuals on migration (Brazil 2009).
Trend Justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats. |
