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Anas aucklandica crop

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Pangalloanserae
Cladus: Galloanseres
Ordo: Anseriformes

Familia: Anatidae
Genus: Anas
Species: Anas aucklandica

Anas aucklandica Gray, 1844

Original combination: Nesonetta aucklandica


The Genera of Birds 3: 627, pl.169 fig.4

Vernacular names
čeština: Čírka hnědá
English: Auckland Teal
español: Cerceta de Auckland
français: Sarcelle brune
日本語: クリイロコガモ
norsk: Bronseand
svenska: Aucklandkricka

The Auckland teal, Auckland Islands teal or brown teal (Anas aucklandica) is a species of dabbling duck of the genus Anas that is endemic to Auckland Islands south of New Zealand. The species was once found throughout the Auckland Islands but is now restricted to the islands that lack introduced predators: Adams Island, Enderby Island, Disappointment Island and a few smaller islands. An old report of "the same flightless duck" on North East Island, The Snares group[3] most likely refers to a straggler.[4]

The Auckland teal is smaller and rarer than the brown teal of the main islands of New Zealand, a species with which it was once considered conspecific. The plumage is all over brown with a hint of green on the neck and a conspicuous white eyering. The female is slightly darker than the male. The wings are very small and the species has, like the related Campbell teal, lost the power of flight.[4]

The Auckland teal is mostly crepuscular to nocturnal, preferring to hide from predators (New Zealand falcons and skuas) during the day. The species inhabits a variety of habitats with the islands, including tussock fields, mega herb shrubland and coastal waters. It is carnivorous for the most part, feeding on marine invertebrates, insects, amphipods and other small Invertebrates. Auckland teal are territorial and seldom form flocks.[4]

BirdLife International (2021). "Anas aucklandia". IUCN Red List of Threatened Species. 2021: e.T22680280A194816119. doi:10.2305/IUCN.UK.2021-3.RLTS.T22680280A194816119.en. Retrieved 31 December 2021.
"Appendices | CITES". Retrieved 2022-01-14.
Hector, J. (1896). "Dr Collins' testimony of a Snares Island duck" (PDF). Transactions and Proceedings of the New Zealand Institute. 29: 614.

Williams, M. (2005). "Auckland Islands Teal Anas aucklandica". In Kear, J. (ed.). Ducks, Geese and Swans of the World. Vol. 2. Oxford: Oxford University Press. pp. 579–581. ISBN 0-19-854645-9.

Further reading
O'Brien, Rory M. (1990). "Anas aucklandica Auckland Teal" (PDF). In Marchant, S.; Higgins, P.G. (eds.). Handbook of Australian, New Zealand & Antarctic Birds. Volume 1: Ratites to ducks; Part B, Australian pelican to ducks. Melbourne, Victoria: Oxford University Press. pp. 1295–1299. ISBN 978-0-19-553068-1.

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