Gloucester Landfill Gull

In the last 4 years Ive seen 15+ Blue ringed Herring Gulls ringed at Gloucester Landfill Site at Newport, some of them on multiple occaisions. Thus far none of them had been reported away from Gloucester sites by any one other than me at Newport.
Until Sept 26. EBW was ringed in its first year at GLS in Oct 08.It spent all of 09 at the same place, but since then was at Telford, Shrops in Dec 10, Liverpool in April 11, Back to GLS in July 11 then at Newport in Sept 11.