List of bird families by number of genera and species


 * Palaeognaths are birds from ostriches to tinamous.
 * Fowl are birds from megapodes (e.g. Malleefowl) to pheasants.
 * Metaves are birds from flamingos to hummingbirds.
 * Coronaves are birds from the hoatzin to the passerines (e.g. House Sparrow).