Based on F.B.Gill, Ornithology, 2nd edn, W.H.Freeman & Co.,New York, 1995

TINAMIFORMES
TINAMIDAE Tinamous

RHEIFORMES
RHEIDAE Rheas

STRUTHIONIFORMES
STRUTHIONIDAE Ostriches

CASUARIIFORMES
DROMICEIDAE Emus
CASUARIIDAE Cassowaries

DINORNITHIFORMES
APTERYGIDAE Kiwis

PODICIPEDIFORMES
PODICIPEDIDAE Grebes

SPHENISCIFORMES
SPHENISCIDAE Penguins

PROCELLARIIFORMES
DIOMEDEIDAE Albatrosses
PROCELLARIIDAE Shearwaters,Petrels,Fulmars
HYDROBATIDAE Storm-Petrels
PELECANOIDIDAE Diving-Petrels

PELECANIFORMES
PHAETHONTIDAE Tropicbirds
FREGATIDAE Frigatebirds
SULIDAE Boobies,Gannets
PHALACROCORACIDAE Cormorants
ANHINGIDAE Darters,Anhingas
PELECANIDAE Pelicans

ANSERIFORMES
ANHIMIDAE Screamers
ANATIDAE Swans,Geese,Ducks

PHOENICOPTERIFORMES
PHOENICOPTERIDAE Flamingos

CICONIIFORMES
ARDEIDAE Herons,Egrets,Bitterns
BALAENICIPITIDAE Shoebill
SCOPIDAE Hammerkop
THRESKIORNITHIDAE Ibises,Spoonbills
CICONIIDAE Storks

FALCONIFORMES
PANDIONIDAE Ospreys
ACCIPITRIDAE Hawks,Eagles,Kites and Old World Vultures
SAGITTARIIDAE Secretarybird
FALCONIDAE Falcons and Caracaras
CATHARTIDAE New World Vultures

GALLIFORMES
CRACIDAE Chachalacas,Guans,Curassows
MEGAPODIIDAE Moundbuilders
NUMIDIDAE Guineafowl
PHASIANIDAE Pheasants,Grouse,Quail and Turkeys
ODONTOPHORIDAE New World Quails

GRUIFORMES
RALLIDAE Rails and Coots
HELIORNITHIDAE Sungrebes
RHYNOCHETIDAE Kagu
EURYPIGIDAE Sunbittern
MESOENATIDAE Roatelos
TURNICIDAE Buttonquails
GRUIDAE Cranes
ARAMIDAE Limpkin
PSOPHIIDAE Trumpeters
CARIAMIDAE Seriemas
OTIDIDAE Bustards

CHARADRIIFORMES
Suborder Charadrii
JACANIDAE Jacanas
ROSTRATULIDAE Painted-snipes
SCOLOPACIDAE:Woodcocks,Snipes,Sandpipers,Phalaropes
CHIONIDIDAE Sheathbills
PLUVIANELLIDAE Magellanic Plover
PEDIONOMIDAE Plains-wanderer
THINOCORIDAE Seedsnipes
BURHINIDAE Thick-knees
HAEMATOPODIDAE Oystercatchers
IBIDORHYNCHIDAE Ibisbill
RECURVIROSTRIDAE Avocets and Stilts
DROMADIDAE Crab Plover
GLAREOLIDAE Pratincoles and Coursers
CHARADRIIDAE Plovers and Lapwings
Suborder Lari
LARIDAE Gulls and Terns
STERCORARIIDAE Jaegers and Skuas
RYNCHOPIDAE Skimmers
Suborder Alcae
ALCIDAE Auks,murres,puffins,guillemots
Suborder Pterocli
PTEROCLIDAE Sandgrouse

GAVIIFORMES
GAVIIDAE Loons

COLUMBIFORMES
COLUMBIDAE Pigeons and Doves
RAPHIDAE Dodo and Solitaires

PSITTACIFORMES
PSITTACIDAE Parrots and Macaws
CACATUIDAE Cockatoos
LORIIDAE Lories and Lorikeets

COLIIFORMES
COLIIDAE Mousebirds

MUSOPHAGIFORMES
MUSOPHAGIDAE Turacos,Plantaineaters

CUCULIFORMES
CUCULIDAE Old World Cuckoos
Note:we have split Cuckoos into CUCULIDAE, CENTROPODIDAE, COCCYZIDAE, COCCYZIDAE and NEOMORPHIDAE
CENTROPODIDAE Coucals
COCCYZIDAE New World Cuckoos
OPISTHOCOMIDAE Hoatzin
CROTOPHAGIDAE Anis
NEOMORPHIDAE Ground-Cuckooss

STRIGIFORMES
TYTONIDAE Barn-Owls
STRIGIDAE Owls

CAPRIMULGIFORMES
STEATORNITHIDAE Oilbirds
PODARDIGAE Frogmouths
AEGOTHELIDAE Owlet-Nightjars
NYCTIBIIDAE Potoos
CAPRIMULGIDAE Nightjars

APODIFORMES
HEMIPROCNIDAE Treeswifts
APODIDAE Swifts
TROCHILIDAE Hummingbirds

TROGONIFORMES
TROGONIDAE Trogons and Quetzals

CORACIIFORMES
ALCEDINIDAE Kingfishers
TODIDAE Todies
MOMOTIDAE Motmots
MEROPIDAE Bee-eaters
CORACIIDAE Rollers
BRACHYPTERACIIDAE Ground-Rollers
LEPTOSOMIDAE Courol or Cuckoo Roller
UPUPIDAE Hoopoes
PHOENICULIDAE Woodhoopoes
BUCEROTIDAE Hornbills

PICIFORMES
GALBULIDAE Jacamars
BUCCONIDAE Puffbirds
INDICATORIDAE Honeyguides
PICIDAE Woodpeckers,Wrynecks,Piculets
LYBIIDAE African Barbets and Tinkerbirds
MEGALAIMIDAE Old World Barbets
CAPITONIDAE American Barbets
RAMPHASTIDAE Toucans

PASSERIFORMES
Suborder Tyranni Suboscines
XENICIDAE New Zealand Wrens
PITTIDAE Pittas
EURYLAIMIDAE Broadbills
PHILEPITTIDAE Asities or False-Sunbirds
TYRANNIDAE Tyrant Flycatchers
COTINGIDAE Cotingas
OXYRUNCIDAE Sharpbill
PHYTOTOMIDAE Plantcutters
PIPRIDAE Manakins
FURNARIIDAE Furnarids
DENDROCOLAPTIDAE Woodcreepers
THAMNOPHILIDAE Antbirds
FORMICARIIDAE Antthrushes and Antpittas
CONOPOPHAGIDAE Gnateaters
RHINOCRYPTIDAE Tapaculos