LC
Eastern Screech-owl Megascops asio



Taxonomy

Taxonomic note
The form lambi was reassigned to Megascops asio from M. cooperi in del Hoyo and Collar (2014), however the claimed sympatry of lambi and M. cooperi (König et al. 2008) is not clear (T.S. Schulenberg in litt. 2019) and lambi is reassigned back to M. cooperi.

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Handbook of the Birds of the World and BirdLife International. 2019. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 4. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v4_Dec19.zip.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2019 Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,220,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 560000 poor estimated 2019
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 7 - - -

Population justification: The global population is estimated to number 560,000 mature individuals (Partners in Flight 2019).

Trend justification: This species has been declining over the last 50 years in North America (47% decline between 1966 and 2015 based on the North American Breeding Bird Survey [Sauer et al. 2017], or 41% decline between 1970 and 2014 based on Partners in Flight [A. Panjabi in litt. 2017]). Data from the Audubon Christmas Bird Count report a decline in the U.S.A., where the majority of the population occurs, while the much smaller population in Canada was found to be increasing (Meehan et al. 2018). A remote-sensing study found that forest loss within its range over the last three generations was potentially 12% (Tracewski et al. 2016).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant Yes
Mexico N Extant Yes
USA N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Temperate major resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 1500 m Occasional altitudinal limits  

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2021) Species factsheet: Megascops asio. Downloaded from http://www.birdlife.org on 23/04/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/04/2021.