The northern hawk-owl (Surnia ulula) is a non-migratory owl that usually stays within its breeding range, though it sometimes irrupts southward. It is one of the few owls that is neither nocturnal nor crepuscular, being active only during the day.
The Buff-fronted Owl (Aegolius harrisii) is a small owl. It is a rare and local resident in the highlands of South America from Venezuela south and east to Peru, northern Argentina and northwest Paraguay. / by João Carlos Martins