Australasian Gannet,Red-tailed Tropicbird and Grey Ternlet. The Sooty Tern (known locally as the Whale Bird) has traditionally been subject to seasonal egg harvesting by Norfolk Islanders.25 - Norfolk Island has only one native mammal, Gould's Wattled Bat ( Chalinolobus gouldii ). It is very rare and may be extinct on the island.