I was going through my photos and revisited a problem I was really stressed about and eventually gave up on. I was photographing a mistle thrush in September or October and a second bird flew in. If I turn up the brightness, you can see the iconic grey head and grey rump of the fieldfare. It looks real, but the lighting was dissapointing.
Using size comparison between the mistle thrush and the unknown bird, I was hoping someone could ID it. If it helps, I live in Hertfordshire, and maybe someone might have Fieldfare sightings in Hertfordshire that align? Anyway, I've recorded all the birds in my area, and we have 4 thrushes. The only two missing are the fieldfare and obvioulsy Ring Ouzel.
Bottom right is suspected fieldfare. If anyone has a better lighting tool, you can use that.
Here is the photo. Thanks!