Possible fieldfare?

Hi, I went on a walk yesterday evening and took this photo. I’m sure the bird on the left is a song thrush, however on looking I’m wondering what the bird on the right is?

Thought it may possibly be a fieldfare, or otherwise a juvenile thrush. Does anyone have any ideas please?

They were in a tree on the edge of some woodland, next to open fields if this helps.

Thank you! Kerry