The classification of birds on this site follows the classification of The Clements Checklist of Birds of the World - by James F. Clements - Sixth Edition.
In The Clements Checklist of Birds of the World these are the orders of birds (Follow the first link to see the families in each order - the second link to all the posts in that order):
Struthioniformes: ostriches, emus, kiwis, and allies (Click here to see all of the posts in this order: Struthioniformes)
Tinamiformes: tinamous (Click here to see all of the posts in this order: Tinamiformes)
Sphenisciformes: penguins (Click here to see all of the posts in this order: Sphenisciformes)
Gaviiformes: loons (Click here to see all of the posts in this order: Gaviiformes)
Podicipediformes: grebes (Click here to see all of the posts in this order: Podicipediformes)
Procellariiformes (Click here to see all of the posts in this order: Procellariiformes)
Pelecaniformes: pelicans and allies (Click here to see all of the posts in this order: Pelecaniformes)
Ciconiiformes: storks and allies (Click here to see all of the posts in this order: Ciconiiformes)
Phoenicopteriformes: flamingos (Click here to see all of the posts in this order: Phoenicopteriformes)
Anseriformes: waterfowl (Click here to see all of the posts in this order: Anseriformes)
Falconiformes: falcons, eagles, hawks and allies (Click here to see all of the posts in this order: Falconiformes)
Galliformes: fowl (Click here to see all of the posts in this order: Galliformes)
Gruiformes: cranes and allies (Click here to see all of the posts in this order: Gruiformes)
Charadriiformes: gulls, button-quails, plovers and allies (Click here to see all of the posts in this order: Charadriiformes)
Pteroclidiformes: sandgrouse (Click here to see all of the posts in this order: Pteroclidiformes)
Columbiformes: doves and pigeons (Click here to see all of the posts in this order: Columbiformes)
Psittaciformes: parrots and allies (Click here to see all of the posts in this order: Psittaciformes)
Cuculiformes: cuckoos and turacos (Click here to see all of the posts in this order: Cuculiformes)
Strigiformes: owls (Click here to see all of the posts in this order: Strigiformes)
Caprimulgiformes: nightjars and allies (Click here to see all of the posts in this order: Caprimulgiformes)
Apodiformes: swifts and hummingbirds (Click here to see all of the posts in this order: Apodiformes)
Coliiformes: mousebirds (Click here to see all of the posts in this order: Coliiformes)
Trogoniformes: trogons (Click here to see all of the posts in this order: Trogoniformes)
Coraciiformes: kingfishers and allies (Click here to see all of the posts in this order: Coraciiformes)
Galbuliformes: Jacamars and Puffbirds (Click here to see all of the posts in this order: Galbuliformes)
Piciformes: woodpeckers and allies (Click here to see all of the posts in this order: Piciformes)
Passeriformes: passerines (Click here to see all of the posts in this order: Passeriformes)
