Elephant bird "A. maximus" and "D. stirtoni" were revised to 540 and 730 kg, respectively. Four species are usually accepted in the genus "Aepyornis" today, but the validity of some is disputed, with numerous authors treating them all in just one species, "A. maximus". Up to three species are generally included in "Mullerornis". Several ratites outside of Madagascar have been posited as "aepyornithid"-like and could potentially make this clade considerably more speciose. These include "Eremopezus" from the Eocene of North Africa, unnamed Canary Island remains and several Neogene taxa in Eurasia. "Aepyornis maximus" is commonly known as the 'elephant bird', a term
Elephant bird documentary "Attenborough and the Giant Egg", presented by Attenborough, about his personal scientific quest to discover the secrets of the elephant bird and its egg. A complete eggshell is also available in the collection of the University of Wrocław Museum of Natural History. There is also an intact specimen of an elephant bird's egg (contrasted with the eggs from other bird species, including a hummingbird's) on display at the Delaware Museum of Natural History, just outside Wilmington, Delaware, US, and another in the Natural History Museum, London. The Melbourne Museum has two "Aepyornis" eggs. The first was acquired for £100