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
Bird Island (Namibia) for its high nitrogen content relative to other guano collection facilities in the region. It is cleaned in Swakopmund to remove feathers and other debris, ground to a powder, and exported to Belgium for US$285 per ton. The platform yields approximately 650 tons of guano annually. Bird Island (Namibia) Bird Island is a man-made platform off the coast of Namibia between Walvis Bay and Swakopmund. It serves as a breeding ground for birds (primarily Cape cormorants) and yields guano which is collected and sold. Bird Island was conceived and constructed by Adolf Winter, a German who emigrated to South West