The Historical Origin of Ostrich Eggs in Ancient Egypt:
Ostrich eggs have been known as a dietary supplement which contains a valuable amount of protein. This huge egg weights up to two kilograms and has a capacity of one liter or even more. The size of this kind of eggs equals the size of two dozen of hen's eggs. The ostrich egg measures about fifteen by thirteen cm. The thickness of its layer is about two mm.
 Concerning the color of its smooth layer; it varies from tan to ivory. The Greek philosopher Aristotle described the ostrich to be the bird who lays the largest number of eggs.