By JJ Harrison (email@example.com) (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
Australasia. Much of Western Australia, south-eastern Australia, Tasmania and New Zealand.
One at Benacre Broad in 2000 and in Sept 2002. One in W Sussex in March 2010. One was at Thatcham Discovery Centre in Berkshire in October 2012.