Wikipedia:

Sibley-Monroe checklist 4

The Sibley-Monroe checklist was a landmark document in the study of birds. It drew on extensive DNA-DNA hybridisation studies to reassess the relationships between modern birds.

Coraciiformes (continued)

Alcedinidae

Halcyonidae

Cerylidae

Meropidae

Coliiformes

Coliidae

Cuculiformes

Cuculidae

Centropidae

Coccyzidae

Opisthocomidae

Crotophagidae

Neomorphidae

Psittaciformes

Psittacidae