Campbell teal | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Anseriformes |
Family: | Anatidae |
Subfamily: | Anatinae |
Genus: | Anas |
Species: | A. nesiotis |
Binomial name | |
Anas nesiotis (Fleming,JH, 1935) |
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Synonyms | |
Anas aucklandica nesiotis |
Anas aucklandica nesiotis
The Campbell teal or Campbell Island teal (Anas nesiotis) is a small, flightless, nocturnal species of dabbling duck of the genus Anas endemic to the Campbell Island group of New Zealand. It is sometimes considered conspecific with the brown teal. The plumage is similar to that of the Auckland teal, dark sepia with the head and back tinged with green iridescence, and a chestnut breast on the male, with the female dark brown all over. Its natural habitat is tussock grassland dominated by Poa tussock grass, ferns and megaherbs. The species also uses the burrows and pathways of petrel species that nest on the islands. They are apparently territorial in the wild, and probably feed on amphipods and insects.
The Campbell teal was once found on Campbell Island, but was driven to extinction there by the introduction of Norway Rats (which ate their eggs and chicks), and was for a while presumed extinct. In 1975 it was rediscovered on Dent Island, a small (23 hectare) islet near Campbell that had remained rat-free. The population was so small that a single event could have driven it to complete extinction; to prevent this from happening, 11 individuals were taken into captivity by the Department of Conservation for captive breeding at the Mt Bruce Wildlife Centre in 1984 while the rest followed in 1990. They were also put on the list of critically endangered species in 1979.