I’ve rarely spotted any wild owls throughout the years, and although Athene noctua has been quite audible since we came to Algeria we only saw them first late this summer.
http://www.iucnredlist.org/details/22689328/0 lists the major threats to the species:
- habitat changes, including the loss of suitable nest-sites
- the use of pesticides
- a reduction of prey items such as voles and earthworms through industrialised farming practices
- agricultural intensification
- ground clearance
- excessive use of toxic chemicals
- road traffic deaths
- loss of nest holes from the felling of old hollow trees and the restoration of old buildings
- severe winters