Bird Classification as per Roberts
VII: Order, Family, Genus
STRUTHIONIFORMES
GALLIFORMES
ANSERIFORMES
TURNICIFORMES
PICIFORMES
BUCEROTIFORMES
UPUPIFORMES
TROGONIFORMES
CORACIIFORMES
COLIIFORMES
CUCULIFORMES
PSITTACIFORMES
APODIFORMES
MUSOPHAGIFORMES
STRIGIFORMES
COLUMBIFORMES
GRUIFORMES
CHARADRIIFORMES
Family Chionidae: Sheathbills
CICONIIFORMES
PASSERIFORMES