Flock of Little Terns (~20) and a few Common and Sandwich Terns. The light was poor but I could see some rings. Maybe someone can get identification if they know what they are looking for.
Looks like http://www.cr-birding.org/node/947 one for the blue-ringed Little Tern with letters. Can't seem to find anything for the other Little Tern.
Common Tern is possibly this one http://www.cr-birding.org/node/4130 I think the black one is 3:19 but can't be sure.
Cheers
Chris.
Thanks Chris. I have now tried to contact your suggested sites.
Word has come back from Christopher Brown as follows :-
Hi Rob,
Thanks for these. AU was ringed as a pullus at Crimdon 8.7.14.
I can't read the Common Tern, although it's certainly one of ours. Did you get a better pic of it?
ps the plain blue ringed birds are mine too but could have been ringed anytime between 1984 and 2011
Cheers, Chris
Word has now come back about the Common Tern :-
"ST10520 colour ringed on 4/7/14 at Paddy's Pool and not reported since"