| Papuan Hawk-Owl Uroglaux dimorpha Link to the stamps |
| Laughing Owl Ninox albifacies † Link to the stamps |
| Rufous Owl Ninox rufa Link to the stamps |
| Powerful Owl Ninox strenua Link to the stamps |
| Barking Owl Ninox connivens Link to the stamps |
| Australian Boobook Ninox boobook Link to the stamps |
| Tasmanian Boobook Ninox leucopsis Link to the stamps |
| Morepork Ninox novaeseelandiae Link to the stamps |
| Northern Boobook Ninox japonica Link to the stamps |
| Andaman Boobook Ninox affinis Link to the stamps |
| Luzon Boobook Ninox philippensis Link to the stamps |
| Christmas Boobook Ninox natalis Link to the stamps |
| Papuan Boobook Ninox theomacha Link to the stamps |
| Bare-legged Owl Margarobyas lawrencii Link to the stamps |
| Collared Owlet Taenioptynx brodiei Link to the stamps |
| Elf Owl Micrathene whitneyi Link to the stamps |
| Long-whiskered Owlet Xenoglaux loweryi Link to the stamps |
| Boreal Owl Aegolius funereus Link to the stamps |
| Northern Saw-whet Owl Aegolius acadicus Link to the stamps |
| Buff-fronted Owl Aegolius harrisii Link to the stamps |
| White-browed Owl Athene superciliaris Link to the stamps |
| Burrowing Owl Athene cunicularia Link to the stamps |
| Little Owl Athene noctua Link to the stamps |
| Spotted Owlet Athene brama Link to the stamps |
| West Solomons Owl Athene jacquinoti Link to the stamps |
| Guadalcanal Owl Athene granti Link to the stamps |
| Northern Hawk-Owl Surnia ulula Link to the stamps |
| Eurasian Pygmy Owl Glaucidium passerinum Link to the stamps |
| Pearl-spotted Owlet Glaucidium perlatum Link to the stamps |
| Red-chested Owlet Glaucidium tephronotum Link to the stamps |
| Sjöstedt's Barred Owlet Glaucidium sjostedti Link to the stamps |
| Asian Barred Owlet Glaucidium cuculoides Link to the stamps |
| Jungle Owlet Glaucidium radiatum Link to the stamps |
| Chestnut-backed Owlet Glaucidium castanotum Link to the stamps |
| African Barred Owlet Glaucidium capense Link to the stamps |
| Chestnut Owlet Glaucidium castaneum Link to the stamps |
| Albertine Owlet Glaucidium albertinum Link to the stamps |
| Northern Pygmy Owl Glaucidium californicum Link to the stamps |
| Mountain Pygmy Owl Glaucidium gnoma Link to the stamps |
| Costa Rican Pygmy Owl Glaucidium costaricanum Link to the stamps |
| Cloud-forest Pygmy Owl Glaucidium nubicola Link to the stamps |
| Andean Pygmy Owl Glaucidium jardinii Link to the stamps |
| Central American Pygmy Owl Glaucidium griseiceps Link to the stamps |
| Amazonian Pygmy Owl Glaucidium hardyi Link to the stamps |
| Ferruginous Pygmy Owl Glaucidium brasilianum Link to the stamps |
| Pacific Pygmy Owl Glaucidium peruanum Link to the stamps |
| Austral Pygmy Owl Glaucidium nana Link to the stamps |
| Cuban Pygmy Owl Glaucidium siju Link to the stamps |
| Giant Scops Owl Otus gurneyi Link to the stamps |
| White-fronted Scops Owl Otus sagittatus Link to the stamps |
| Serendib Scops Owl Otus thilohoffmanni Link to the stamps |
| Sandy Scops Owl Otus icterorhynchus Link to the stamps |
| Sokoke Scops Owl Otus ireneae Link to the stamps |
| Andaman Scops Owl Otus balli Link to the stamps |
| Flores Scops Owl Otus alfredi Link to the stamps |
| Mountain Scops Owl Otus spilocephalus Link to the stamps |
| Luzon Scops Owl Otus longicornis Link to the stamps |
| Rainforest Scops Owl Otus rutilus Link to the stamps |
| Karthala Scops Owl Otus pauliani Link to the stamps |
| Anjouan Scops Owl Otus capnodes Link to the stamps |
| Rodrigues Scops Owl Otus murivorus † Link to the stamps |
| Pallid Scops Owl Otus brucei Link to the stamps |
| Eurasian Scops Owl Otus scops Link to the stamps |
| Cyprus Scops Owl Otus cyprius Link to the stamps |
| Pemba Scops Owl Otus pembaensis Link to the stamps |
| Sao Tome Scops Owl Otus hartlaubi Link to the stamps |
| African Scops Owl Otus senegalensis Link to the stamps |
| Oriental Scops Owl Otus sunia Link to the stamps |
| Ryukyu Scops Owl Otus elegans Link to the stamps |
| Siau Scops Owl Otus siaoensis Link to the stamps |
| Seychelles Scops Owl Otus insularis Link to the stamps |
| Indian Scops Owl Otus bakkamoena Link to the stamps |
| Collared Scops Owl Otus lettia Link to the stamps |
| Japanese Scops Owl Otus semitorques Link to the stamps |
| Philippine Scops Owl Otus megalotis Link to the stamps |
| Negros Scops Owl Otus nigrorum Link to the stamps |
| Palau Owl Otus podarginus Link to the stamps |
| Northern White-faced Owl Ptilopsis leucotis Link to the stamps |
| Southern White-faced Owl Ptilopsis granti Link to the stamps |
| Jamaican Owl Asio grammicus Link to the stamps |
| Striped Owl Asio clamator Link to the stamps |
