From Opus
Order: Coraciiformes
[edit] Description
As defined by Clements (2007), this taxon includes Kingfishers, Todys, Motmots, Bee-eaters, Rollers, Ground-rollers, the Cuckoo Roller, Hoopoes, Woodhoopoes, and Hornbills1.
[edit] Taxonomy
Recent phylogenetic studies suggest that this order will be split in future. It appears that the Kingfishers, Todys, Motmots, Bee-eaters, Rollers and Ground-Rollers are more closely related to Piciformes (Woodpeckers and allies) than to the Hornbills and Hoopoes2. The Cuckoo Roller is even more distantly related2.