Giant Elephant Bird egg (Aepyornis maximus), extinct, the egg reconstructed from shards found in Madagascar to form the egg, 30cm high, 25cm wide The elephant birds were giant ratites native to Madagascar, and have been extinct since at least the 17th century. It was the world`s largest bird, believed to have been up to 3 meters tall and weighing close to 400kg. The egg volume is approximately 160 times greater than a chickens egg