Several of these thrush-like birds were running around and foraging on the grass in the afternoon sun at Brereton Country Park, Cheshire. They are fieldfare, almost certainly winter visitors to the UK.

The similar redwing would have red flanks, and the fieldfare does have a characteristic black tail. I didn’t have a long telephoto lens, but this is adequate for identification purposes with maximum zoom on my Panasonic TZ200 (360mm equivalent) – cropped.