The biggest egg In the world was laid millions of years ago by a flightless bird sometimes called the Roc, or the elephant bird, of Madagascar.
No one has ever seen one of these eggs whole, but pieces have been found permitting scientists to make an accurate estimate of their size.
This great egg is reported to have been 13.5 inches long and 9.5 inches across. One of these giants could hold as much as 148 hen eggs or as much as 30,000 hummingbird eggs.
Did you know that the ruby throated hummingbird egg is the size of a single pea? Other hummingbirds lay eggs even smaller than this.
Today, the ostrich is the bird that lays the biggest eggs. An ostrich egg will hold as much as eight to ten hen eggs.