The Coraciiformes are a group of usually colorful bird
s including the kingfisher
s, the bee-eater
s, the roller
s, the motmot
s, and the todies
. They generally have syndactyly
, with three forward-pointing toes (and toes 3 & 4 fused at their base), though in many kingfishers one of these is missing.
This is largely an Old World order
, with the representation in the New World
limited to the dozen or so species of todies
s, and a mere handful of the more than a hundred species of kingfishers.
The name Coraciiformes means "raven
-like", which is a misnomer
(ravens are passerines
). Specifically, it comes from the Latin language
"corax", meaning "raven" and Latin "forma", meaning "form", which is the standard ending for bird orders.
This order has been seen to be something of a mixed assortment, and the Coraciiformes may be considered as including only the rollers. All the other families would then be considered to represent lineages of birds distantly related to Coraciiformes. This seems to be oversplitting
, as most Coraciiformes indeed form a reasonably robust clade
Analysis of nDNA
'' and RAG-1 exon
as well as mtDNA myoglobin intron
data demonstrates that the Coraciiformes can be divided into a basal
group that is not too distantly related to the Piciformes
, and a derived suborder
containing mainly kingfishers (Johansson & Ericson, 2003). The cuckoo roller
's true affinities appear to lie elsewhere. The trogons
are either very basal lineages, or might be considered distinct own orders; the latter are apparently slightly closer to the rollers than the former. The entire group (possibly excluding the cuckoo roller) and the Piciformes are closely related to the Passeriformes
(Johansson & Ericson 2003; see also near passerine
Several extinct coraciiform families are only known from Paleogene fossil
s. They probably belong to the basal group and are sometimes difficult to assign because they were even closer still to the Piciformes (''see also'' ''Neanis
''). In addition, there are some prehistoric genera
which are likewise difficult to place into a family. At least the Eocoraciidae
are very basal, but the Late Eocene
(some 35 mya
form a superfamily Coracioidea
with the extant rollers and ground-rollers already (Mayr & Mourer-Chauviré 2000). A few prehistoric taxa
of the present-day families have been described; see the family articles for details.
* Genus ''Quasisyndactylus
; Middle Eocene of Messel, Germany) - alcediniform, basal?
* Genus ''Cryptornis
; Late Eocene of France) – bucerotid? geranopterid?
* Family Primobucconidae
), including ''Primobucco
'' and ''Septencoracias
* Coraciiformes gen. et spp. indet. PQ 1216, QU 15640 (fossil
; Late Eocene of Quercy, France: Mayr & Mourer-Chauviré 2000)
* Genus ''Protornis
: Oligocene of Switzerland) – basal to motmotids and meropids?
A recent study suggest that the following families may belong to a separate order called Bucerotiformes
. The results still in dispute though.
* Family Bucorvidae
* Family Bucerotidae
* Family Upupidae
* Family Phoeniculidae
(cuckoo roller) probably do not belong here. The trogon
s are sometimes placed here as a family Trogonidae. The Late Eocene Palaeospizidae
are sometimes also placed in the Coraciiformes, as are the Early to Middle Eocene Primobucconidae
and the Middle Eocene to Early Oligocene Sylphornithidae
. The Primobucconidae at least indeed seem to belong here.
* Family Eocoraciidae
; Middle Eocene of Messel, Germany)
* Family Geranopteridae
; Late Eocene of Quercy, France – Early Miocene of Czech Republic) - includes ''"Nupharanassa" bohemica''
* Family Coraciidae
* Family Brachypteraciidae
* Family Meropidae
* Family Todidae
* Family Momotidae
* Family Alcedinidae
* List of Coraciiformes by population
*Johansson, Ulf S. & Ericson, Per G. P. (2003): Molecular support for a sister group relationship between Pici and Galbulae (Piciformes sensu Wetmore 1960). ''J. Avian Biol.
'' 34(2): 185–197. PDF fulltext
*Mayr, Gerald & Mourer-Chauviré, Cécile (2000): Rollers (Aves: Coraciiformes. s.s.) from the Middle Eocene of Messel (Germany) and the Upper Eocene of the Quercy (France). ''J. Vertebr. Paleontol.
'' 20(3): 533–546. DOI:10.1671/0272-4634(2000)020533:RACSSF.0.CO;2PDF fulltext
*Terres, John K. (1980) The Audubon Society Encyclopedia of North American Birds.
Order Coraciiformes - Biodiversity Overview: Untamed ScienceTree of Life: Coraciiformes
Category:Extant Eocene first appearances
Category:Eocene taxonomic orders
Category:Oligocene taxonomic orders
Category:Miocene taxonomic orders
Category:Pliocene taxonomic orders
Category:Pleistocene taxonomic orders
Category:Holocene taxonomic orders