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
The Goose That Laid the Golden Eggs goose that lays the golden egg", sometimes shortened to "Killing the golden goose", derives from this fable. It is generally used of a short-sighted action that destroys the profitability of an asset. Caxton's version of the story has the goose's owner demand that it lay two eggs a day; when it replied that it could not, the owner killed it. The same lesson is taught by Ignacy Krasicki's different fable of "The Farmer:" There is another variant on the story, recorded by Syntipas (Perry Index 58) and appearing in Roger L'Estrange's 1692 telling as "A Woman and a Fat Hen"