Campbell Island is also the main breeding ground for the Yellow-eyed Penguin, a New Zealand endemic and one of the world's rarest penguins. Large numbers of White-chinned Petrels and Sooty Shearwaters breed here, along with Northern Giant Petrels, Diving Petrel and Grey-backed Storm-Petrel. The New Zealand Antarctic Tern has its stronghold here. It is a rare subspecies (possible species?) restricted to the New Zealand subantarctic islands and Stewart Island. Brown Skua also nests here.
Grassland covers much of the island, but megaherbs, above, occur from sea level to the summit ridges.
Three land birds occur here: a teal, above, a snipe and New Zealand pipit. The snipe was discovered in 1997 on Jacquemart Island. The flightless Campbell Island Teal, one of the world's rarest ducks was rediscovered on Dent Island, off Northwest Bay in 1975. Related to the Auckland Island Teal and endangered Brown Teal of mainland New Zealand, it feeds mainly on aquatic or marine invertebrates.
Among the marine mammals, seals are well represented at Campbell Island. There are populations of New Zealand Sea Lion, New Zealand Fur Seal and Southern Elephant Seal.
The removal of sheep and cattle changed the island. But it was the rat eradication program that really brought the island back, including the megaherbs. This is one of the most sensational stories in seabird conservation. The New Zealanders went on to become worldwide experts in the eradication of rats from islands. They are currently working to remove rats from South Georgia, another one of the world's most spectacular subantarctic islands.


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