Brown Teal - Anas aucklandica
( Gray, 1844 )

 

 

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Subspecies: Unknown
Est. World Population: 330-1700, 1000-1700

CITES Status: NOT LISTED
IUCN Status: Near Threatened
U.S. ESA Status: NOT LISTED

Body Length:
Tail Length:
Shoulder Height:
Weight:

Top Speed:
Jumping Ability: (Horizontal)

Life Span: in the Wild
Life Span: in Captivity

Sexual Maturity: (Females)
Sexual Maturity: (Males)
Litter Size:
Gestation Period:

Habitat:
It primarily inhabits sheltered coastlines feeding on tideline resources, and uses dense coastal vegetation as escape and nesting cover. It also occurs along peaty streams and on pools in wetlands with abundant sedge and tussock cover (Williams 2013). It feeds mostly in washed up seaweed for invertebrates, or in coastal pools, and also eats algae (Moore and Walker 1991). It has a low breeding rate and low annual productivity (Williams 1995). It is sedentary and flightless.

Range:
Anas aucklandica is endemic to the Auckland Islands, New Zealand, where it has populations on Ewing, Enderby, Rose, Ocean, Adams, Disappointment and Dundas Islands. Small numbers of individuals occasionally visit Friday, French's and Monumental islands (McClelland 1993). It formerly bred on Auckland Island, where there are records from the 1940s but it is now excluded from that island due to the presence of feral pigs and cats (Williams 1986, 2013).


Conservation:
Conservation Actions Underway
CITES Appendix I. A recovery plan was published in 1993 (McClelland 1993).

Cattle, rabbits and mice have been eradicated from Enderby Island, and rabbits from Rose Island, leaving all teal-inhabited islands free of introduced mammals. A feasibility study of the eradication of pigs, cats and mice from Auckland Island is underway (Department of Conservation 2018). The species has bred successfully in captivity as an aid to the Campbell Island Teal A. nesiotis recovery programme, but there is no dedicated captive-breeding programme (M. Williams in litt. 1999).

Conservation Actions Proposed
Monitor the population size.

Implement biosecurity precautions to prevent the introduction of mammals or diseases to the species's range islands. Elaborate plans to remove cats, pigs and mice from Auckland Island. Develop a structured captive breeding programme for future reintroductions and supplementation efforts. Promote the recovery of the species and the importance of predator-free island ecosystems.

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