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
Rotamah Island Bird Observatory island to Ninety Mile Beach. These factors give visitors easy access to both freshwater and marine habitats. There is a small population of the introduced Hog Deer on the island. In 2001 negotiations between Birds Australia and Parks Victoria, on renewal of the lease to the observatory, broke down and Birds Australia's association with Rotamah Island ended. Rotamah Island Bird Observatory Rotamah Island Bird Observatory was established in 1979 on Rotamah Island in the Gippsland Lakes National Park in eastern Victoria, Australia, by Birds Australia as Australia's second bird observatory, in order to provide a base for the study and