Bigger than a Robin yet smaller than a crow.
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Not convinced it is possible to give a positive ID from the picture supplied.
My Flickr photos...
Thanks Mark, I did query an adult or possibly juvenile Jackdaw but wasn't sure due to the lack of black plumage on the crown?
I guess this photo was taken on a mobile phone. Not clear enough for me to hazard a guess. I am not telling you how to suck eggs but I remember being extremely unsatisfied with photos on my phone until I had the bright thought to clean the lens. My pocket must have been full of fluff if not worse. Much better after the clean.
If you are using a phone and its an Android, try out the new, free iSpot app available from Play.
University of Edinburgh and Biodiversity Observatory (OU)
Lat/Lng: 52.27312, -8.7295
OS grid ref: SK411852
Costal town close to marshland & farmland.