No interactions present.
Interesting to see one that is ringed, have you reported it?
I had a look on cr-birding.org but couldn't find any matching birds.
More photos here... http://www.flickr.com/photos/jcspace
If you cannot find a project on cr-birding try reporting to the general BTO list at http://blx1.bto.org/euring/lang/pages/colour_rings.jsp - they are usually pretty good at finding the person for you.
Lat/Lng: 54.63163, -5.87381
OS grid ref: NW500331
RSPB Belfast Harbour Lagoon