Norfolk has never been joined to a land mass - which gives its species some very special characteristics. It means they have survived an oceanic journey and the hazards of adapting to a new environment. Some groups of animals are less represented than others.
There are some 116 bird species on the island.
Lord Howe Island gecko
Fossil evidence suggests this motley olive-green gecko, known as Christinus guentheri, once lived on Norfolk Island, but it is thought to have suffered local extinction due to predation by rodents. Fortunately rodents and cats have never established themselves on Phillip Island, so the gecko survives there in large numbers.