annettussa

Anettussa is a genus of small, flightless birds belonging to the family Anatidae, which also includes ducks, geese, and swans. These birds are endemic to the sub-Antarctic islands of New Zealand, primarily the Auckland Islands and Campbell Island. They are characterized by their compact bodies, short necks, and relatively long legs, adapted for navigating through dense vegetation and rocky shorelines.

The most well-known species within this genus is the Auckland Island teal (Annettussa aucklandica), although it is now often referred to by its scientific name, which may vary depending on taxonomic classification. A related species, the Campbell teal (Annettussa campbellensis), historically inhabited Campbell Island, but was thought to be extinct for a period before rediscovery.

Anettussa species are omnivorous, feeding on a diet of insects, crustaceans, seeds, and aquatic invertebrates. They are typically solitary or found in pairs, and are secretive in their habits, often dwelling in thick undergrowth or crevices. Breeding usually occurs once a year, with females laying a small clutch of eggs. Their conservation status is a concern due to their limited geographic range and susceptibility to introduced predators, although conservation efforts have been implemented to protect these unique island birds.