One of the few species of owl that have a distinct migration, Long-eared Owls are more likely to be seen in Portugal during the winter months when they are widespread but scarce. They often gather where habitat is suitable, (dense foliage), in roosts of 10 to 20 individuals, are active at dawn, dusk and during the night and are surprisingly approachable during the day when roosting. The place I've found them most easily is in Castro Verde.
Joomla Gallery makes it better. Balbooa.com