Pacific Screech-owl Megascops cooperi


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
Partners in Flight estimated the population to number 50,000-499,999 mature individuals (A. Panjabi in litt. 2017).

Trend justification

The species has undergone a small or non-significant decline between 1970 and 2014 (A. Panjabi in litt. 2017). A remote-sensing study found that forest loss within its range over the last three generations was potentially 6% (Tracewski et al. 2016); thus the species may have declined by <10% over the last three generations.


Text account compilers
Butchart, S., Hermes, C., Ekstrom, J., Smith, D.

Panjabi, A.

Recommended citation
BirdLife International (2020) Species factsheet: Megascops cooperi. Downloaded from on 06/04/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from on 06/04/2020.