Strange birds!

To be honest, I took this a couple of weeks ago but I am wondering if anyone can tell me which birds these are.  I am thinking they may be fieldfares?   I am sure I have seen a large group of them on the fields here, feeding in the grass.
I know there are very knowledgeable folk out there - any ideas?
Sorry it's not a great photo, I don't have a big lens so it was at maximum zoom on my little camera.