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 oscines see Suborder Oscines Passerida - passeridans see Parvorder Passerida (C. Linnaeus, 1758) Sibley et al., 1988 Muscicapoidea Family Polioptilidae Baird, 1858 - gnatcatchers Genus Polioptila P.L. Sclater, 1855 Polioptila californica Brewster, 1881