Elephant bird process of continental drift. Claims of findings of "aepyornithid" egg remains on the eastern Canary Islands, if valid, would represent a major biogeographical enigma. These islands are not thought to have been connected to mainland Africa when elephant birds were alive. There is no indication that elephant birds evolved outside Madagascar, and today, the Canary Island eggshells are considered to belong to extinct North African birds that may not have been ratites (possibly "Eremopezus"/"Psammornis", or even Pelagornithidae, prehistoric seabirds of immense size). Various "aepyornithid-like" eggs and bones occur in Paleogene and Miocene deposits in Africa and Europe. Two whole eggs
North Island piopio 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 species due to their pronounced differences in external appearance and osteology (Olson "et al.", 1983). An alternate name for the North Island piopio is the North Island thrush. The North Island piopio was endemic to the North Island of New Zealand and was described by Walter Buller