Anas platyrhynchos Mallards were introduced in to New Zealand from European and US Stock.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/32541690@N02">Alan Vernon</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/alanvernon/3762631804/">Mallard hen (Anas platyrhynchos) with chicks in New Zealand, North Island</a>