The near passerine bird order Cuculiformes tradeetionally includit three faimilies as belaw:

Temporal range:
Eocene - Holocene, 34–0 Ma
Cacomantis flabelliformis.jpg
Fan-tailed cuckoo (Cacomantis flabelliformis)
Scientific classification e
Kinrick: Animalia
Phylum: Chordata
Cless: Aves
Clade: Otidimorphae
Order: Cuculiformes
Wagler, 1830
Faimily: Cuculidae
Leach, 1820
Teep species
Cuculus canorus

Aroond 26

Housomeivver, the taxonomy o this group is nou controversial. The Sibley-Ahlquist taxonomy raises the Musophagidae tae a order Musophagiformes which mey or mey no be warrantit. The Hoatzin continues tae be enigmatic; it is probably best regardit as a distinct, monotypic order, especially if the turacos are considered ane an aw. The coucals an anis are whiles considered subfaimilies o the Cuculidae, or itherwise assigned tae faimilies o thair awn, the Centropodidae an Crotophagidae respectively.


The fossil record o this group is hintle debatit. The unique anatomy o Cuculidae (in the auld sense) aften allous for the easy identification even o isolatit bones. Cuckoos o prehistoric genera are kent syne the Late Eocene, some 40-35 million years ago. Turaco fossils are kent frae hintle later anerly.

A nummer o ither Paleogene fossils hae at times been assigned tae the Cuculiformes, but thay are no uisually includit here onymair in mair recent treatments: The Late Paleocene tae mid-Eocene Gracilitarsidae wur at first believit tae be cuculiforms but this is no generally acceptit the day. Thay remain meesterious tho, due tae thair apomorphic anatomy, an micht be close tae the equally enigmatic Sylphornithidae kent frae the mid-Eocene tae the Early Oligocene. Frae the Early Eocene, Parvicuculus an Procuculus might be Cypselomorphae o a hitherto unrecognisit lineage. The genus Foro micht be alliet wi the Hoatzin.

See an awEedit

Leet o Cuculiformes bi population