High Quality Content by WIKIPEDIA articles! The Superb Fairywren (Malurus cyaneus), also known as the Superb Blue-wren or colloquially as the Blue Wren, is a passerine bird of the Maluridae family, common and familiar across south-eastern Australia. The species is sedentary and territorial, also exhibiting a high degree of sexual dimorphism; the male in breeding plumage has a striking bright blue forehead, ear coverts, mantle, and tail, with a black mask and black or dark blue throat. Non-breeding males, females and juveniles are predominantly grey-brown in colour; this gave the early impression that males were polygamous, as all dull-coloured birds were taken for females. Two subspecies are recognized: the larger and darker Tasmanian form cyaneus and the smaller and paler mainland form cyanochlamys.