"A plume from the extinct huia bird has sold for a record sum at auction in New Zealand. The feather was bought by a family from Wellington who declined to be identified. The brown and white feather traditionally used to adorn Maori chiefs sold for £3,800. No huia bird has been since 1907" -- Daily Sport, 23 June 2010.
Thanks to Paul Screeton for passing it along to the CFZ UK.