As usual a very quick reply from Tony Fox with the history of the ringed Geese X0C, X6D and X9K at Trefin.
This is a summary of his detailed email
All three geese were caught at Wexford North Slob by Alyn Walsh of the National Park and Wildlife Service, part of a very long running programme of research there on the population, started in 1982/83.
X0C and X6D were both marked as first winter females in March 2013, with X9K an adult female caught in the same catch.
In the winter of 2013/14, these three birds returned to Wexford
They were not seen in the winter of 2014/15 (nor 2017/18), but in winter 2015/16 X0J, X6D and X9K were seen together at Wexford, and X6D in 2016/17
The only other record we have was of X0C seen in the southern lowlands of Iceland in October 2016 although X6D was seen very briefly at Hvanneyri in west Iceland this autumn.
