Data Zone
Justification of Red List category
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). 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 very 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 total population is suspected to number 50,000-500,000 mature individuals (Partners in Flight 2019; see also Panjabi et al. 2019).
Trend justification
The species is suspected to be have undergone a moderate to large population decrease since 1970 (Partners in Flight 2019; see also Panjabi et al. 2019), because its limited range and reliance upon tropical deciduous forests make it vulnerable to any habitat degradation or destruction (del Hoyo et al. 1994).
Text account compilers
Hermes, C.
Contributors
Butchart, S., Ekstrom, J. & Westrip, J.R.S.
Recommended citation
BirdLife International (2024) Species factsheet: West Mexican Chachalaca Ortalis poliocephala. Downloaded from
https://datazone.birdlife.org/species/factsheet/west-mexican-chachalaca-ortalis-poliocephala on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.