Flightless bird also included here. Flightless bird Flightless birds are birds that through evolution lost the ability to fly. There are over 60 extant species including the well known ratites (ostrich, emu, cassowary, rhea and kiwi) and penguins. The smallest flightless bird is the Inaccessible Island rail (length 12.5 cm, weight 34.7 g). The largest (both heaviest and tallest) flightless bird, which is also the largest living bird, is the ostrich (2.7 m, 156 kg). Ostriches are farmed for their decorative feathers, meat and their skins, which are used to make leather. Many domesticated birds, such as the domestic chicken and domestic
Rufous-crowned emu-wren Rufous-crowned emu-wren The rufous-crowned emu-wren ("Stipiturus ruficeps") is a species of bird in the Australasian wren family, Maluridae. It is endemic to Australia. The rufous-crowned emu-wren is one of three species of the genus "Stipiturus", commonly known as emu-wrens, found across southern and central Australia. It was first described in 1899 by Archibald James Campbell, more than a century after its relative the southern emu-wren. Its species name is derived from the Latin words "rufus" "red" and "caput" "head". No subspecies are recognised, although birds from Western Australia may have redder plumage, and females more blue on the face and