This bird order houses many colorful birds, such as kingfishers, bee-eaters, rollers, motmots and todies. There is very little literature on hybridization in the Coraciiformes. Introgression between two subspecies of the Dwarf Kingfisher (Ceyx erithaca) has been documented (Lim, Sheldon & Moyle, 2010; Sims, 1959). And an intergeneric hybrid between Amazonian Motmot (Momotus momota) and Rufous-capped Motmot (Baryphthengus ruficapillus) in Brazil has been morphologically described (Marcondes et al., 2013).
Lim, H. C., Sheldon, F. H. & Moyle, R. G. (2010). Extensive color polymorphism in the southeast Asian oriental dwarf kingfisher Ceyx erithaca: a result of gene flow during population divergence? Journal of Avian Biology 41, 305-318.
Marcondes, R. S., Silveira, L. F., de Oliveira, D. F. N. & Cardoso, G. (2013). Occurrence of hybrids between Momotus momota and Baryphthengus ruficapillus (Momotidae) in central Brazil. Wilson Journal of Ornithology 125, 674-679.
Sims, R. (1959). The Ceyx erithacus and rufidorsus species problem. Journal of the Linnean Society of London, Zoology 44, 212-221.