We've just retired to the South Gower Coast village of Southgate. Each morning I'm seeing black birds in the garden, most of them ringed, either on one leg or occasionally large ring left leg, and small ring right leg. I know nothing about birds but interested to learn more. What birds are they - not huge, short dark beak? And why are so many ringed?
I can't make out what your bird is, PW, possibly a juvenile starling, although equally possibly not! HERE is a link to the BTO ringing scheme.