| 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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| American Hawk Owl NA | | Andean pygmy-owl | Asian barred owlet (Cuckoo owlet) AS | | Austral pygmy owl | | Bactrian little owl | Boreal owl (Tengmalm's owl) (No Subspecific status) nEU,AS | | Buff-fronted owl | Burrowing owl (No Subspecific status) NA,EU ,AS,nEU,SA | | Cactus ferruginous pygmy owl NA | | Central American pygmy owl | | Chinese boreal owl AS | | Clarión Burrowing owl | Collared owlet (Collared pygmy-owl) AS | | Cuban pygmy-owl | | Elf owl | | Ethiopian little owl | | Eurasian northern hawk-owl nEU,EU | Eurasian pygmy-owl (European pygmy-owl) EU ,nEU | European boreal owl (European tengmalm's owl) EU ,nEU | Ferruginous pygmy-owl (No Subspecific status) EU ,nEU,SA,NA,AS | | Florida burrowing owl NA | Hartert´s Little Owl (Levant Little Owl) AS | | Highland burrowing owl SA | | Javan owlet AS | | Jungle owlet AS | Least pygmy-owl (no species or subspecies status) | Little Owl (No Subspecific status) EU ,nEU,AS,AU | | Mountain pygmy-owl | | North African Little Owl | Northern little owl (Feathery-footed little owl) | | Northern pygmy owl NA | | Northern saw-whet owl NA | | Pearl-spotted owlet EU ,AF | Peruvian pygmy-owl (Pacific pygmy-owl) SA | Richardson's owl (Richardson`s boreal owl) | | Short-winged burrowing owl | Sjostedt's owlet (Sjostedt's barred owlet) (Chestnut-backed owlet) | | South-east european little owl AS | | Southern burrowing owl SA | | Southern Spotted owlet | Spotted Owlet (No Subspecific status) EU ,AS | | Western Burrowing Owl nEU,NA | | Western Little owl EU ,nEU | White-banded Owl (Indo-chinese Spotted Owl) | |
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Cactus ferruginous pygmy owl
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Glaucidium brasilianum cactorum (Syn.: Glaucidium ridgwayi cactorum)
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VAN ROSSEM, 1937 |
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| | Information Source for Taxonomy: | IOC World Bird List – Version 14.1 (2024) |
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