This reserve is about 1,300 km from Landshipping. It was ringed/marked as a young male on 20th January 2015 and has only been re-sighted locally there during the same day. "Unlike other teal it has never returned but was re-sighted in Holland (Haukesloot, 52º56’N 05º26’E, at about 1,730km from S. Jacinto), on 17th March 2016".
David is keen to know of any other ducks with their nasal saddle marks - so it's worth checking beaks closely of other teal etc in the area.
Some more information about the nasal saddles and their duck marking project is available here
The reserve is an interesting Ramsar wetland area - Annie visited it exactly 29 year ago today!