Based on C. G Sibley and B. L. Monroe Jr, Distribution and Taxonomy of Birds of the World, Yale U.P., New Haven, 1990, with modifications from C. G. Sibley & B. L. Monroe Jr,1993, A Supplement to Distribution and Taxonomy of Birds of the World, Yale U. P., New Haven, 1993.

STRUTHIONIFORMES
STRUTHIONIDAE Ostriches
RHEIDAE Rheas
CASUARIIDAE(Casuariini) Cassowaries
CASUARIIDAE(Dromaiini) Emus
APTERYGIDAE Kiwis

TINAMIFORMES
TINAMIDAE Tinamous

CRACIFORMES
CRACIDAE Guans,Chachalacas,Curassows
MEGAPODIIDAE Megapodes

GALLIFORMES
PHASIANIDAE Grouse,Turkeys,Pheasants,Partridges,Quail
NUMIDIDAE Guineafowls
ODONTOPHORIDAE New World Quails

ANSERIFORMES
ANHIMIDAE Screamers
ANSERANATIDAE Magpie-Goose
DENDROCYGNIDAE Whistling-Ducks
ANATIDAE(Oxyurinae) Stiff-tailed Ducks
ANATIDAE(Stictonettinae) Freckled Duck
ANATIDAE(Cygninae) Swans
ANATIDAE(Anserini) Geese
ANATIDAE(Anatini) Typical Ducks

TURNICIFORMES
TURNICIDAE Buttonquails

PICIFORMES
INDICATORIDAE Honeyguides
PICIDAE Woodpeckers,Wrynecks
MEGALAIMIDAE Asian Barbets
LYBIIDAE African Barbets
RAMPHASTIDAE(Capitoninae) New World Barbets
RAMPHASTIDAE(Ramphastinae) Toucans

GALBULIFORMES
GALBULIDAE Jacamars
BUCCONIDAE Puffbirds

BUCEROTIFORMES
BUCEROTIDAE Typical Hornbills
BUCORVIDAE Ground Hornbills

UPUPIFORMES
UPUPIDAE Hoopoes
PHOENICULIDAE Woodhoopoes
RHINOPOMASTIDAE Scimitarbills

TROGONIFORMES
TROGONIDAE(Apalodermatinae) African Trogons
TROGONIDAE(Trogoninae;Trogonini) New World Trogons
TROGONIDAE(Trogoninae;Harpactini) Asian Trogons

CORACIIFORMES
CORACIIDAE Typical Rollers
BRACHYPTERACIIDAE Ground-Rollers
LEPTOSOMIDAE Cuckoo-Roller
MOMOTIDAE Motmots
TODIDAE Todies
ALCEDINIDAE Alcedinid Kingfishers
HALCYONIDAE Halcyonid Kingfishers
CERYLIDAE Cerylid Kingfishers
MEROPIDAE Bee-eaters

COLIIFORMES
COLIIDAE(Coliinae) Mousebirds
COLIIDAE(Urocoliinae) Long-tailed Mousebirds

CUCULIFORMES
CUCULIDAE Old World Cuckoos
CENTROPODIDAE Coucals
COCCYZIDAE American Cuckoos
OPISTHOCOMIDAE Hoatzin
CROTOPHAGIDAE(Crotophagini) Anis
CROTOPHAGIDAE(Guirini) Guira Cuckoo
NEOMORPHIDAE Roadrunners,Ground-Cuckoos

PSITTACIFORMES
PSITTACIDAE Parrots

APODIFORMES
APODIDAE(Cypseloidinae) Cypseloides,Streptoprocne
APODIDAE(Chaeturinae) Spine-tailed Swifts,Swiftlets
APODIDAE(Apodinae) Aeronautes,Tachornis,Panyptila,...Apus
HEMIPROCNIDAE Treeswifts or Crested Swifts

TROCHILIFORMES
TROCHILIDAE(Phaethornithinae) Hermits
TROCHILIDAE(Trochilinae) Typical Hummingbirds

MUSOPHAGIFORMES
MUSOPHAGIDAE(Musophaginae) Turacos
MUSOPHAGIDAE(Criniferinae) Plantain-eaters

STRIGIFORMES
TYTONIDAE Barn & Grass Owls
STRIGIDAE Typical Owls
AEGOTHELIDAE Owlet-Nightjars
PODARGIDAE Australian Frogmouths
BATRACHOSTOMIDAE Asian Frogmouths
STEATORNITHIDAE Oilbirds
NYCTIBIIDAE Potoos
EUROSTOPODIDAE Eared-Nightjars
CAPRIMULGIDAE(Chordeilinae) Nighthawks
CAPRIMULGIDAE(Caprimulginae) Nightjars

COLUMBIFORMES
RAPHIDAE Dodos,Solitaires
COLUMBIDAE Pigeons,Doves

GRUIFORMES
EURYPIGIDAE Sunbittern
OTIDIDAE Bustards
GRUIDAE(Balearicinae) Crowned Cranes
GRUIDAE(Gruinae) Typical Cranes
ARAMIDAE Limpkin
HELIORNITHIDAE Sungrebes
PSOPHIIDAE Trumpeters
CARIAMIDAE Seriemas
RHYNOCHETIDAE Kagu
RALLIDAE Rails,Gallinules,Coots
MESITORNITHIDAE Mesites

CICONIIFORMES
PTEROCLIDAE Sandgrouse
THINOCORIDAE Seedsnipe
PEDIONOMIDAE Plains-wanderer
SCOLOPACIDAE(Scolopacinae) Woodcocks,Snipes
SCOLOPACIDAE(Tringinae) Sandpipers,Curlews,Phalaropes
ROSTRATULIDAE Painted-Snipe
JACANIDAE Jacanas
CHIONIDIDAE Sheathbills
PLUVIANELLIDAE Magellanic Plover
BURHINIDAE Thick-knees
CHARADRIIDAE(Recurvirostrinae,Haematopodini) Oystercatchers
CHARADRIIDAE(Recurvirostrinae,Recurvirostrini) Avocets,Stilt
CHARADRIIDAE(Charadriinae) Plovers,Lapwings
GLAREOLIDAE(Dromadinae) Crab Plover
GLAREOLIDAE(Glareolinae) Pratincoles,Coursers
LARIDAE(Larinae,Stercorariini) Skuas,Jaegers
LARIDAE(Larinae,Rynchopini) Skimmers
LARIDAE(Larinae,Larini) Gulls
LARIDAE(Larinae,Sternini) Terns
LARIDAE(Alcinae) Auks,Murres,Puffins
ACCIPTRIDAE(Pandioninae) Osprey
ACCIPITRIDAE(Accipitrinae) Hawks,Eagles
SAGITTARIIDAE:Secretary-Bird
FALCONIDAE(Caracarinae) Caracaras
FALCONIDAE(Micrasturinae) Forest-Falcons
FALCONIDAE(Falconinae,Falconini) True Falcons
FALCONIDAE(Falconinae,Herpetothirini) Laughing Falcon
PODICIPEDIDAE Grebes
PHAETHONTIDAE Tropicbirds
SULIDAE Boobies,Gannets
ANHINGIDAE Darters
PHALACROCORACIDAE Cormorants
ARDEIDAE Herons,Bitterns,Egrets
SCOPIDAE Hammerhead
PHOENICOPTERIDAE Flamingos
THRESKIORNITHIDAE Ibises,Spoonbills
PELECANIDAE(Balaenicipitinae) Shoebill
PELECANIDAE(Pelecaninae) Pelicans
CICONIIDAE(Cathartinae) New World Vultures
CICONIIDAE(Ciconiinae) Storks
FREGATIDAE Frigatebirds
SPHENISCIDAE Penguins
GAVIIDAE Loons
PROCELLARIIDAE(Procellariinae) Petrels,Shearwaters
PROCELLARIIDAE(Diomedeinae) Albatrosses
PROCELLARIIDAE(Hydrobatinae) Storm-Petrels