Largest organisms is frequently poorly documented and many are subject to conjecture and estimation. The largest living bird, a member of the Struthioniformes, is the common ostrich ("Struthio camelus"), from the plains of Africa and Arabia. A large male ostrich can reach a height of and weigh over . A mass of has been cited for the common ostrich but no wild ostriches of this weight have been verified. Eggs laid by the ostrich can weigh and are the largest eggs in the world today. The largest bird in the fossil record may be the extinct elephant birds ("Aepyornis") of Madagascar, which
Sri Lanka spurfowl species of bird in the genus "Galloperdix". It is a ground nesting bird, which lays 2-5 eggs in a scrape. Sri Lanka spurfowl is ~ 37 cm long bird. Both sexes have brown upperparts, wings and tail. The males exhibit vivid crimson red legs and bare facial skin and striking black and white dorsal plumage that extends to its head. There is also extensive white ocellation on the sepia wings and upperback. The legs of both sexes have multiple metatarsal spurs, which give rise to the specific name. The female has chestnut underparts and a plain brown back and wings.