The order comprises one family, confined to New Guinea, Australia, the Moluccas and New Caledonia:
Genus-level classification of extant Aegotheliformes.
References
Dumbacher
JP,
Pratt
TK, and Fleischer
RC (2003),
Phylogeny
of the owlet-nightjars (Aves: Aegothelidae) based on mitochondrial DNA sequence, Mol. Phylogenet. Evol. 29, 540-549. (abstract)