Mumbles Bracelet Bay Aberavon

30 + Mediterranean Gulls (BB) others at Mumbles Blackcap 2 females near coastal path.  Spent an hour looking for Ross’s Gull late afternoon-no joy again! There was no sign of the Little Gulls either. On Blackpill Beach one dead of each Razorbill Guillemot and Kittiwake. A Mediterranean Gull at BB had a white ring on left leg with number 25 on it, I could not make out if there were other numbers.