Flightless bird 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 duck, have lost
Lesser bird-of-paradise larger greater bird-of-paradise, but the male of that species has a dark chest, whereas the female is entirely brown (no whitish underparts). The males are polygamous, and perform courtship displays in leks. The female usually lays two pinkish eggs with dark markings in a nest in a tree high above ground. Its diet consists mainly of fruits and insects. The lesser bird-of-paradise is distributed throughout forests of northern New Guinea, and the nearby islands of Misool and Yapen. Widespread and common throughout its large range, the lesser bird-of-paradise is evaluated as Least Concern on the IUCN Red List of Threatened