This Lesser Black-backed Gull was ringed in the Port on 24th July 2009 & seen at Ria Formosa, Faro, Portugal on 14th October 2009, back in the Port on 14th May 2014 then on the beach at LBO on 25th July 2023 & again this morning in the company of a couple of youngsters. It presumably summers in the dock area but has only been seen on a handful of occasions over 15 years !
Blackcap ringed LBO 23rd April 2022 hit a window 749 km away at Lergravvaengt, Arhus, Denmark on 19th June 2023 which is presumably its natal area.