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
North Island piopio the Hauhungaroa Range west of Lake Taupo. The introduction of foreign predatory mammals such as cats and rats to New Zealand's North Island is mostly to blame for the North Island piopio's extinction, with habitat loss and predation by mustelids also being significant from the 1880s onward. North Island piopio The North Island piopio ("Turnagra tanagra") was a passerine bird of the family Oriolidae. The North Island piopio is now considered to be extinct. For many years, the North Island piopio was considered to be conspecific with the South Island piopio, but the two are now regarded as two separate