| Citation |
BirdLife International 2016. Hirundapus cochinchinensis. The IUCN Red List of Threatened Species 2016: e.T22686684A93121901. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22686684A93121901.en. Downloaded on 26 November 2019. |
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 reported to be locally common to uncommon (del Hoyo et al. 1999), while the population in Taiwan has been estimated at c.100-10,000 breeding pairs, c.50-1,000 individuals on migration and < c.50 wintering individuals (Brazil 2009).
Trend Justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats. |
