| + | Ratites (Struthioniformes) |
| + | Fowl-like Birds (Galliformes) |
| + | Tinamiformes (Tinamiformes) |
| + | Waterfowl (Anseriformes) |
| + | Grebes (Podicipediformes) |
| + | Divers (Gaviiformes) |
| + | Penguins (Sphenisciformes) |
| + | Tube-Nosed Seabirds (Procellariiformes) |
| + | Totipalmate Swimmers (Pelicans and Allies) (Pelecaniformes) |
| + | Herons, Storks and Ibis (Ciconiiformes) |
| + | Flamingos (Phoenicopteriformes) |
| + | Diurnal Birds of Prey (Falconiformes) |
| + | Rails, Cranes and Bustards (Gruiformes) |
| + | Button-Quail (Turniciformes) |
| + | Shorebirds and Gulls (Charadriiformes) |
| + | Opisthocomiformes (Opisthocomiformes) |
| + | Pigeons and Doves (Columbiformes) |
| + | Cockatoos, Parrots and Lorikeets (Psittaciformes) |
| + | Cuckoos and Coucals (Cuculiformes) |
| + | Sandgrouse (Pterocliformes) |
| + | Cuckoos and Coucals (Cuculiformes) |
| - | Owls (Strigiformes) |
|
| + | Barn Owls (Tytonidae) | | - | Typical (Hawk) Owl (Strigidae) | |
| Photo | Common Name | Scientific Name | |
 | Powerful Owl | Ninox strenua | |
| | Rufous Owl | Ninox rufa | |
| | Barking Owl | Ninox connivens | |
 | Southern Boobook | Ninox novaeseelandiae | |
| | Brown Hawk-Owl | Ninox scutulata | |
| | Moluccan Hawk-Owl | Ninox squamipila | |
| | Sumba Boobook | Ninox rudolfi | |
| | Andaman Boobook | Ninox affinis | |
| | White-browed Boobook | Ninox superciliaris | |
| | Philippine Boobook | Ninox philippensis | |
| | Ochre-bellied Boobook | Ninox ochracea | |
| | Jungle Boobook | Ninox theomacha | |
| | Manus Boobook | Ninox meeki | |
| | Speckled Boobook | Ninox punctulata | |
| | Bismarck Boobook | Ninox variegata | |
| | Russet Boobook | Ninox odiosa | |
| | Solomon Islands Boobook | Ninox jacquinoti | |
| | Christmas Boobook | Ninox natalis | |
| | White-fronted Scops-Owl | Otus sagittatus | |
| | Reddish Scops-Owl | Otus rufescens | |
| | Sandy Scops-Owl | Otus icterorhynchus | |
| | Sokoke Scops-Owl | Otus ireneae | |
| | Andaman Scops-Owl | Otus balli | |
| | Mountain Scops-Owl | Otus spilocephalus | |
| | Simeulue Scops-Owl | Otus umbra | |
| | Javan Scops-Owl | Otus angelinae | |
| | Sulawesi Scops-Owl | Otus manadensis | |
| | Luzon Scops-Owl | Otus longicornis | |
| | Mindoro Scops-Owl | Otus mindorensis | |
| | Mindanao Scops-Owl | Otus mirus | |
| | Sao Tome Scops-Owl | Otus hartlaubi | |
| | Pallid Scops-Owl | Otus brucei | |
| | Flammulated Owl | Otus flammeolus | |
| | Eurasian Scops-Owl | Otus scops | |
| | Elegant Scops-Owl | Otus elegans | |
| | Mantanani Scops-Owl | Otus mantananensis | |
| | Moluccan Scops-Owl | Otus magicus | |
| | Malagasy Scops-Owl | Otus rutilus | |
| | Comoro Scops-Owl | Otus pauliani | |
| | Rajah Scops-Owl | Otus brookii | |
| | Indian Scops-Owl | Otus bakkamoena | |
| | Mentawai Scops-Owl | Otus mentawi | |
| | Palawan Scops-Owl | Otus fuliginosus | |
| | Philippine Scops-Owl | Otus megalotis | |
| | Wallace's Scops-Owl | Otus silvicola | |
| | White-faced Scops-Owl | Otus leucotis | |
| | Western Screech-Owl | Otus kennicottii | |
| | Eastern Screech-Owl | Otus asio | |
| | Whiskered Screech-Owl | Otus trichopsis | |
| | Tropical Screech-Owl | Otus choliba | |
| | Koepcke's Screech-Owl | Otus koepckeae | |
| | West Peruvian Screech-Owl | Otus roboratus | |
| | Bare-shanked Screech-Owl | Otus clarkii | |
| | Bearded Screech-Owl | Otus barbarus | |
| | Rufescent Screech-Owl | Otus ingens | |
| | Cloud-forest Screech-Owl | Otus huberi | |
| | Tawny-bellied Screech-Owl | Otus watsonii | |
| | Variable Screech-Owl | Otus atricapillus | |
| | Vermiculated Screech-Owl | Otus vermiculatus | |
| | Long-tufted Screech-Owl | Otus sanctaecatarinae | |
| | Bare-legged Owl | Otus lawrencii | |
| | Puerto Rican Screech-Owl | Otus nudipes | |
| | Palau Owl | Otus podarginus | |
| | White-throated Screech-Owl | Otus albogularis | |
| | Flores Scops-Owl | Otus alfredi | |
| | Beccari's Scops-Owl | Otus beccarii | |
| | Anjouan Scops-Owl | Otus capnodes | |
| | Pacific Screech-Owl | Otus cooperi | |
| | Enggano Scops-Owl | Otus enganensis | |
| | Middle American Screech-Owl | Otus guatemalae | |
| | Hoy's Screech-Owl | Otus hoyi | |
| | Seychelles Scops-Owl | Otus insularis | |
| | Oaxaca Screech-Owl | Otus lambi | |
| | Sunda Scops-Owl | Otus lempiji | |
 | Collared Scops-Owl | Otus lettia | |
| | Pemba Scops-Owl | Otus pembaensis | |
| | Balsas Screech-Owl | Otus seductus | |
| | Japanese Scops-Owl | Otus semitorques | |
| | African Scops-Owl | Otus senegalensis | |
| | Oriental Scops-Owl | Otus sunia | |
| | Austral Screech-Owl | Otus usta | |
| | Mindanao Eagle-Owl | Mimizuku gurneyi | |
| | Great Horned Owl | Bubo virginianus | |
| | Eurasian Eagle-Owl | Bubo bubo | |
| | Rock Eagle-Owl | Bubo bengalensis | |
| | Pharaoh Eagle-Owl | Bubo ascalaphus | |
| | Cape Eagle-Owl | Bubo capensis | |
| | Spotted Eagle-Owl | Bubo africanus | |
| | Fraser's Eagle-Owl | Bubo poensis | |
| | Usambara Eagle-Owl | Bubo vosseleri | |
| | Spot-bellied Eagle-Owl | Bubo nipalensis | |
| | Barred Eagle-Owl | Bubo sumatranus | |
| | Shelley's Eagle-Owl | Bubo shelleyi | |
| | Verreaux's Eagle-Owl | Bubo lacteus | |
 | Dusky Eagle-Owl | Bubo coromandus | |
| | Akun Eagle-Owl | Bubo leucostictus | |
| | Philippine Eagle-Owl | Bubo philippensis | |
| | Blakiston's Fish-Owl | Ketupa blakistoni | |
| | Brown Fish-Owl | Ketupa zeylonensis | |
| | Tawny Fish-Owl | Ketupa flavipes | |
| | Buffy Fish-Owl | Ketupa ketupu | |
| | Pel's Fishing-Owl | Scotopelia peli | |
| | Rufous Fishing-Owl | Scotopelia ussheri | |
| | Vermiculated Fishing-Owl | Scotopelia bouvieri | |
| | Snowy Owl | Nyctea scandiaca | |
| | Spotted Wood-Owl | Strix seloputo | |
| | Mottled Wood-Owl | Strix ocellata | |
| | Brown Wood-Owl | Strix leptogrammica | |
| | Tawny Owl | Strix aluco | |
| | Hume's Owl | Strix butleri | |
| | Spotted Owl | Strix occidentalis | |
| | Barred Owl | Strix varia | |
| | Fulvous Owl | Strix fulvescens | |
| | Rusty-barred Owl | Strix hylophila | |
| | Rufous-legged Owl | Strix rufipes | |
| | Ural Owl | Strix uralensis | |
| | Sichuan Wood-Owl | Strix davidi | |
| | Great Grey Owl | Strix nebulosa | |
| | Mottled Owl | Strix virgata | |
| | Black-and-white Owl | Strix nigrolineata | |
| | Black-banded Owl | Strix huhula | |
| | Rufous-banded Owl | Strix albitarsus | |
| | African Wood-Owl | Strix woodfordii | |
| | Maned Owl | Jubula lettii | |
| | Crested Owl | Lophostrix cristata | |
| | Spectacled Owl | Pulsatrix perspicillata | |
| | Band-bellied Owl | Pulsatrix melanota | |
| | Tawny-browed Owl | Pulsatrix koeniswaldiana | |
| | Northern Hawk Owl | Surnia ulula | |
| | Eurasian Pygmy-Owl | Glaucidium passerinum | |
| | Collared Owlet | Glaucidium brodiei | |
| | Pearl-spotted Owlet | Glaucidium perlatum | |
| | Northern Pygmy-Owl | Glaucidium californicum | |
| | Mountain Pygmy-Owl | Glaucidium gnoma | |
| | Andean Pygmy-Owl | Glaucidium jardinii | |
| | Yungas Pygmy-Owl | Glaucidium bolivianum | |
| | Amzonian Pygmy-Owl | Glaucidium hardyi | |
| | Brazilian Pygmy-Owl | Glaucidium minutissimum | |
| | Ferruginous Pygmy-Owl | Glaucidium brasilianum | |
| | Pacific Pygmy-Owl | Glaucidium peruanum | |
| | Austral Pygmy-Owl | Glaucidium nanum | |
| | Cuban Pygmy-Owl | Glaucidium siju | |
| | Red-chested Owlet | Glaucidium tephronotum | |
| | Sjostedt's Owlet | Glaucidium sjostedti | |
| | Asian Barred Owlet | Glaucidium cuculoides | |
| | Javan Owlet | Glaucidium castanopterum | |
| | Jungle Owlet | Glaucidium radiatum | |
| | Chestnut-backed Owlet | Glaucidium castanonotum | |
| | African Barred Owlet | Glaucidium capense | |
| | Chestnut Owlet | Glaucidium castaneum | |
| | Ngami Owlet | Glaucidium ngamiense | |
| | Scheffler's Owlet | Glaucidium scheffleri | |
| | Albertine Owlet | Glaucidium albertinum | |
| | Guatemalan Pygmy-Owl | Glaucidium cobanense | |
| | Central American Pygmy-Owl | Glaucidium griseiceps | |
| | Cape Pygmy-Owl | Glaucidium hoskinsii | |
| | Colima Pygmy-Owl | Glaucidium palmarum | |
| | Subtropical Pygmy-Owl | Glaucidium parkeri | |
| | Tamaulipas Pygmy-Owl | Glaucidium sanchezi | |
| | Tucuman Pygmy-Owl | Glaucidium tucumanum | |
| | Long-whiskered Owlet | Xenoglaux loweryi | |
| | Elf Owl | Micrathene whitneyi | |
| | Little Owl | Athene noctua | |
 | Spotted Owlet | Athene brama | |
| | Forest Owlet | Athene blewitti | |
| | Burrowing Owl | Speotyto cunicularia | |
| | Boreal Owl | Aegolius funereus | |
| | Saw-whet Owl | Aegolius acadicus | |
| | Buff-fronted Owl | Aegolius harrisii | |
| | Unspotted Saw-whet Owl | Aegolius ridgwayi | |
| | Papuan Boobook | Uroglaux dimorpha | |
| | Laughing Owl | Sceloglaux albifacies | |
| | Jamaican Owl | Pseudoscops grammicus | |
| | Stygian Owl | Asio stygius | |
| | Long-eared Owl | Asio otus | |
| | Abyssinian Owl | Asio abyssinicus | |
| | Madagascar Owl | Asio madagascariensis | |
| | Striped Owl | Asio clamator | |
| | Short-eared Owl | Asio flammeus | |
| | Marsh Owl | Asio capensis | |
| | Fearful Owl | Nesasio solomonensis | |
|
|
| + | Nightjars and Relatives (Caprimulgiformes) |
| + | Swifts (Apodiformes) |
| + | Kingfishers, Rollers and Bee-Eaters (Coraciiformes) |
| + | Songbirds (Passeriformes) |
| + | Coliiformes (Coliiformes) |
| + | Trogons (Trogoniformes) |
| + | Galbuliformes (Galbuliformes) |
| + | Woodpeckers, Barbets and Toucans (Piciformes) |
