LC
White-tailed Ptarmigan Lagopus leucura



Justification

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 is extremely large, and hence does not 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
The global population is estimated to number 2,000,000 mature individuals (Partners in Flight 2019).

Trend justification
The population trend is uncertain, with potential small declines (Partners in Flight 2019, see also Panjabi et al. 2019). Given the threats facing this species, e.g. mining and climate change (Martin et al. 2015), the population is precautionarily considered to be in slow decline.

Acknowledgements

Text account compilers
Hermes, C.

Contributors
Butchart, S., Ekstrom, J. & Westrip, J.R.S.


Recommended citation
BirdLife International (2024) Species factsheet: Lagopus leucura. Downloaded from https://datazone.birdlife.org/species/factsheet/white-tailed-ptarmigan-lagopus-leucura on 23/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 23/02/2024.