Eucavitaves is a clade that contains the order Trogoniformes (trogons) and the clade Picocoraciae (a large assemblage of birds that includes woodpeckers, kingfishers, hornbills and hoopoes).Naish, D. (2012). "Birds." Pp. 379-423 in Brett-Surman, M.K., Holtz, T.R., and Farlow, J. O. (eds.), The Complete Dinosaur (Second Edition). Indiana University Press (Bloomington & Indianapolis).Kimball, R.T. et al. (2013) Identifying localized biases in large datasets: A case study using the Avian Tree of Life. Mol Phylogenet Evol. The group was defined in the PhyloCode by George Sangster and colleagues in 2022 as "the least inclusive crown clade containing Trogon viridis and Picus viridis". The name refers to the fact that the majority of them nest in cavities.
Cladogram of Eucavitaves relationships based on Jarvis, E.D. et al. (2014) with some clade names after Yuri, T. et al. (2013) and Kimball 2013.
References