This is Chalkie (or perhaps son of Chalkie, as I last saw Chalkie a couple of years ago), a popular resident of this corner of Prospect Park, Reading, UK and a leucistic blackbird. I was out early to avoid the full sun, and so was he.
Canon R5 Mk II +RF 200-800mm lens
It did make my walk, the day is yet young, but maybe to day as well!
Chalkie from 2022, the last time I’ve a photo of them (I’ve also some 2021 photos):