| Ostriches | | Rheas | | Kiwis | | Cassowaries | | Tinamous | | Waterfowl | | Landfowl | | Nightjars | | Oilbird | | Potoos | | Frogmouths | | Owlet-nightjars | | Treeswifts, Swifts, Hummingbirds | | Turacos | | Bustards | | Cuckoos | | Mesites | | Sandgrouse | | Doves, Pigeons | | Cranes, Rails & relatives | | Grebes | | Flamingos | | Shorebirds | | Sunbittern, Kagu | | Tropicbirds | | Loons | | Penguins | | Tubenoses | | Storks | | Gannets, Cormorants & relatives | | Pelicans, Ibises, Herons & relatives | | Hoatzin | | Birds of Prey | | Owls | | | Barn Owls | | | Hawk-owls | | | Owlets, Pygmy-owls | | | Scops-owls, Screech-owls | | | Eared owls | | | Wood-owls | | | Eagle-owls | | Mousebirds | | Cuckoo roller | | Trogons | | Hornbills, Hoopoes, Wood hoopoes | | Rollers, Kingfishers, Bee-eaters & relatives | | Woodpeckers and Relatives | | Seriemas | | Falcons, Caracaras | | Parrots | | Perching birds (Songbirds) |
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Powerful owl
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Ninox strenua
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(GOULD, 1838) |
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| | Number of Subspecies: | 00 | | Information Source for Taxonomy: | IOC World Bird List – Version 15.1 (2025)
| | IUCN status: | LC (Least Concern)
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