Amongst them was a juvenile with a series of uncoded colour-rings. After a bit of detective work I managed to find out that it had been ringed at Finistère, Brittany, France on July 5th 2017. This is quite an impressive northward dispersal from its natal colony. I also learnt that it's mother has reached the ripe old age of 22.
The Kittiwakes proved to be very photogenic especially the juveniles.