Mergus australis Hombron & Jacquinot, 1841:320

Auckland Islands merganser, Southern merganser, Miuweka (Māori)



Taxonomy & Nomenclature

Synonym/s: Merganser australis (Hombron & Jacquinot, 1841:320); Hutton 1904, Index Faunae N.Z.: 37. Promergus australis (Hombron & Jacquinot, 1841:320); Mathews & Iredale 1913, Ibis 1 (10th series): 410.;


Conservation Status


Last record: 1901 (Hume & Walters, 2012); 9 January 1902 (Fuller, 1988; Checklist Committee (OSNZ), 2022:31)

IUCN RedList status: Extinct



Auckland Islands (& South Island?), New Zealand


Biology & Ecology




Known preserved material (after Kear & Scarlett, 1970):

26 skins

3 almost complete skeletons

1 carcass (preserved in alcohol)

plus some additional bones



Above: Southern Merganser. Mergus australis. From the series: Extinct Birds of New Zealand., 2005, Masterton, by Paul Martinson. Purchased 2006. © Te Papa. CC BY-NC-ND 4.0. Te Papa (2006-0010-1/33)



Original scientific description:

Hombron, J. and Jacquinot, H. (1841). A description of the Auckland Islands Merganser. Ann. Sci. Nat. Zool. 16: 320.


Other references:

Alexander, D. (1902). Cruise of the Tutanekai to the southern islands December 1901–January 1902. Manuscript MSY-4600, Alexander Turnbull Library (National Library of New Zealand), Wellington, New Zealand.

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BirdLife International. 2016. Mergus australis. The IUCN Red List of Threatened Species 2016: e.T22680496A92864737. Accessed on 02 July 2022.

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