Mergus milleneri Williams & Tennyson, 2014:22

Chatham Islands merganser



Taxonomy & Nomenclature

Synonym/s: Mergus millineri Williams & tennyson, 2014:22 [orth. error used by (Robertson et al., 2021:20)]; Mergus australis Hombron & Jacquinot, 1841 (in part)


Conservation Status




Chatham Islands, New Zealand


Biology & Ecology









Original scientific description:

Williams, M., A. J. D. Tennyson and D. Sim. (2014). Island differentiation of New Zealand’s extinct mergansers (Anatidae: Mergini), with description of a new species from Chatham Island. Wildfowl 64: 3-34. [automatic download]


Other references:

Checklist Committee (OSNZ). (2022). Checklist of the Birds of New Zealand (5th edition). Ornithological Society of New Zealand Occasional Publication No. 1. Wellington: Ornithological Society of New Zealand. [p. 31]

Millener, P. R. (1991). The Quaternary avifauna of New Zealand, pp. 1317-1344. In: Vickers-Rich, P. V.; Monaghan, J. M.; Baird, R. F.; Rich, T. H. ed. Vertebrate palaeontology of Australasia. Melbourne, Pioneer Design Studios in cooperation with the Monash University Publications Committee. 1437 pp.

Millener, P. R. (1996). Extinct birds, pp. 113-120. In: Anonymous (ed.) The Chatham Islands: heritage and conservation. Christchurch, Canterbury University Press and New Zealand Department of Conservation. 136 pp.

Millener, P. R. (1999). The history of the Chatham Islands' bird fauna of the last 7000 years—A chronicle of change and extinction. Smithsonian Contributions to Paleobiology 89: 85-109.

Miskelly, Colin M., Forsdick, Natalie J., Gill, Brian J., Palma, Ricardo L., Rawlence, Nicolas J. and Tennyson, Alan J. D. (2022). Amendments to the 2010 Checklist of the birds of New Zealand. Ornithological Society of New Zealand Occasional Publication No. 2. Wellington: Ornithological Society of New Zealand.

Robertson, H. A., Baird, K. A., Elliott, G. P., Hitchmough, R. A., McArthur, N. J., Makan, T. D., Miskelly, Colin M., O’Donnell, C. F. J., Sagar, P. M., Scofield, R. P., Taylor, G. A. and Michel, P. (2021). Conservation status of birds in Aotearoa New Zealand, 2021. New Zealand Threat Classification Series 36. Department of Conservation, Wellington. 43 pp.

Tennyson, A.J.D. 2015. Chatham Island merganser. In Miskelly, C.M. (ed.) New Zealand Birds Online.

Tennyson, A.J.D.; Martinson, P. 2007 (revised edn). Extinct birds of New Zealand. Wellington, Te Papa Press.

Watanabe, Junya. (2017). Quantitative discrimination of flightlessness in fossil Anatidae from skeletal proportions. The Auk 134(3): 672-695.

Williams, Murray, Holdaway, Richard N. and Rogers, Karyne M. (2012). Feeding environments of New Zealand’s extinct merganser revealed by stable isotope analyses. Wildfowl 62: 190-203.

Williams, Murray, Tennyson Alan J. D. and Sim, Dalice. (2015). Island differentiation of New Zealand's extinct mergansers (Anatidae: Mergini), with description of a new species from Chatham Island: correction and addition. Wildfowl 65: 167-170.


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