The largest extant species of bird measured by mass is the common ostrich (Struthio camelus) closely followed by the Somali ostrich (Struthio molybdophanes). The Struthioniformes family are from the plains of Africa. A male ostrich can reach a height of 2.8 metres (9.2 feet) and weigh over 156 kg (344 lb), A mass of 200 kg (440 lb) has been cited for the ostrich but no wild ostriches of this weight have been verified. Ostrich eggs are the largest of any bird, weighing up to 1.4 kg (3.1 lb).