Aegolius funereus (Tengmalm’s Owl)

Tengmalm’s Owl

Dutch: Ruigpootuil

Order: Strigiformes
Family: Strigidae
Genus: Aegolius
Species: Aegolius funereus

adult male, note the asymmetry of the cranium, which is typical for Aegolius owls

Side, top and bottom view of skull. (Click on image to enlarge)

Length: 48 mm
Length cranium: 33 mm
Width (cranium): 40 mm
Height (cranium): 24 mm
Alternative names: Boreal Owl (en) Raufu├čkauz (German), Chouette de Tengmalm (French), Mochuelo Boreal (Spanish)