Chatham_duck
Anas chathamica
Extinct species of bird
Anas chathamica, the Chatham duck or Chatham Island duck is an extinct species of duck which once lived in New Zealand's Chatham Islands in the south-west Pacific Ocean. It likely became extinct in about the 16th century because of hunting by humans.[1]
| Anas chathamica Temporal range: Late Pleistocene-Holocene | |
|---|---|
Extinct (16th century) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Genus: | Anas |
| Species: | †A. chathamica |
| Binomial name | |
| †Anas chathamica Oliver, 1955 | |
The species was formerly placed in a monotypic genus Pachyanas. However, analysis of mitochondrial DNA extracted from subfossil remains[2] showed that the Chatham duck was not, in fact, closely related to shelducks but instead belongs in the genus Anas: the dabbling ducks. Its closest living relatives appear to be the Auckland teal, Campbell teal and the brown teal from New Zealand.
It was described by Walter Oliver (as a "stoutly built duck") from bird bones in the collection of the Canterbury Museum in 1955 in the second edition of his work New Zealand Birds.[3] Some authors have suggested that the Chatham duck was flightless;[4] however, comparison of Chatham duck wing bones with those from living ducks indicates no disproportional reduction in wing length.[2]
- Tennyson, A.; Martinson, P. (2006). Extinct Birds of New Zealand. Wellington: Te Papa Press. ISBN 978-0-909010-21-8.
- Mitchell, Kieren J.; Wood, Jamie R.; Scofield, R. Paul; Llamas, Bastien; Cooper, Alan (2014). "Ancient mitochondrial genome reveals unsuspected taxonomic affinity of the extinct Chatham duck (Pachyanas chathamica) and resolves divergence times for New Zealand and sub-Antarctic brown teals". Molecular Phylogenetics and Evolution. 70: 420–428. doi:10.1016/j.ympev.2013.08.017. PMID 23994164.
- Oliver, W.R.B. (1955). New Zealand Birds. Wellington: Reed. ISBN 978-0-589-00851-2.
- Shugart, H.H. (2007). How the Earthquake Bird Got Its Name and Other Tales of an Unbalanced Nature. Yale University Press. ISBN 978-0-300-12270-1.
- Chatham Island Duck Pachyanas chathamica by Paul Martinson. Artwork produced for the book Extinct Birds of New Zealand, by Alan Tennyson, Te Papa Press, Wellington, 2006