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This species is the only member of the order Anseriformes known to have carotenoid pigments in its feathers, in the characteristic pink "ear" spot.<ref>{{cite journal |author= Thomas, D.B.; McGraw, K.J.; Butler, M.W.; Carrano, M.T.; Madden, O.; James, H.F. |year= 2014 |title= Ancient origins and multiple appearances of carotenoid-pigmented feathers in birds. |url= http://rspb.royalsocietypublishing.org/content/281/1788/20140806.short|journal= Proceedings of the Royal Society B, Biological Sciences|publisher= |volume= 281 |issue= 1788 |doi= 10.1098/rspb.2014.0806}}</ref>
The pink-eared duck was reportedly known as the New Holland duck by early colonists in Western Australia.
==Distribution==
Widely distributed throughout Australia and highly mobile, these ducks can appear anywhere there is standing water, especially in dry inland regions, where annual rainfall rarely exceeds {{convert|15
==Food==
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==References==
{{Reflist
<ref name = "Gray">{{cite book | title = Australian Bird Names: A Complete Guide | first = Jeannie | last = Gray | first2 = Ian | last2 = Fraser | year = 2013 | publisher = CSIRO Publishing | location = Collingwood, VIC, Australia | page = 13 | isbn = 978-0-643-10469-3 | url = https://books.google.com/books?id=z6ia8rqTa7EC&pg=PA13}}</ref>
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*Sraml, M.; Christidis, L.; Easteal, S.; Horn, P. & Collet, C. (1996): Molecular Relationships Within Australasian Waterfowl (Anseriformes). ''Australian Journal of Zoology'' '''44'''(1): 47-58. <small>{{DOI|10.1071/ZO9960047}}</small> (HTML abstract)
*MacDonald, J. D. 1987. ''The Illustrated Dictionary of Australian Birds by Common Name.'' Reed Books, Australia.
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