Northern Hawk OwlDutch: Sperweruil |
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| Order: | Strigiformes |
| Family: | Strigidae |
| Genus: | Surnia |
| Species: | Surnia ulula |
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Side, top and bottom view of skull. (Click on image to enlarge) |
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| Length: | 55 mm |
| Length cranium: | 38 mm |
| Width (cranium): | 39 mm |
| Height (cranium): | 27 mm |
| Alternative names: Sperbereule (German), Chouette épervière (French), Cárabo Gavilán (Spanish) | |