Tengmalm’s OwlDutch: Ruigpootuil |
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| Order: | Strigiformes |
| Family: | Strigidae |
| Genus: | Aegolius |
| Species: | Aegolius funereus |
   
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| adult male, note the asymmetry of the cranium, which is typical for Aegolius owls | |
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Side, top and bottom view of skull. (Click on image to enlarge) |
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| Length: | 48 mm |
| Length cranium: | 33 mm |
| Width (cranium): | 40 mm |
| Height (cranium): | 24 mm |
| Alternative names: Boreal Owl (en) Raufußkauz (German), Chouette de Tengmalm (French), Mochuelo Boreal (Spanish) | |