Tuesday, May 30, 2017

An introduction most determined: Mallard (Anas platyrhynchos) to New Zealand

TitleAn introduction most determined: Mallard (Anas platyrhynchos) to New Zealand
Publication TypeJournal Article
Year of Publication2010
AuthorsDyer, J, Williams, M
JournalNotornis
Volume57
Issue4
Pagination178-195
Type of ArticleFull article
Keywordsacclimatisation, Anas platyrhynchos, introduction, mallard, New Zealand
Abstract

The introductions of mallard (Anas platyrhynchos) to New Zealand, and their breeding and release as a game bird by Acclimatisation Societies are summarised. We identify 19 importations, 14 of which (a total of 115 birds all from Great Britain) were sufficient to establish small feral populations in southern and central New Zealand by about 1910. Five subsequent importations were made by Aucklander C.A. Whitney, 3 from Great Britain in 1910 (6 birds), 1914 (number unconfirmed) and 1927 (393 birds), followed by 99 birds (1937) and 45 eggs (1941) both from the USA. It was Whitney’s distribution of eggs following his initial USA importation that prompted widespread breeding and release programmes which, in some regions, extended into the 1960’s and 70’s. We identify a minimum of 30,000 mallards having been released by Acclimatisation Societies, but numerous releases by private individuals remain unrecorded. Almost all regional Acclimatisation Societies at some time released mallards into the wild.

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