"VU" . "Sylvia cerulea (Wilson, 1810)" . . . "IUCN3.1" . "Dendroica cerulea (Wilson, 1810)" . "Dendroica caerulea (Wilson, 1810) (unjustified emendation)" . . . "The cerulean warbler (Setophaga cerulea) is a small songbird of the New World warbler family."@en . . . . . . "Cerulean warbler"@en .