Neornithes Gadow, 1893 - living birds Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900 Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988 [Order] Passeriformes Linnaeus, 1758 Family Acanthisittidae Sundevall, 1872 - New Zealand wrens 1 Genus Acanthisitta de Lafresnaye, 1842 [monotypic] 2 Genus Xenicus G.R. Gray, 1855