Unidentified thrush

Can anyone help me identify a thrush species. I have posted the pics on the site but you can also view the images at


 


http://uk.geocities.com/emma.ashton@btopenworld.com/Birds/thrush.html


 


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I don't think it to be a British species unless it is a very unusual blackbird.  The photos were taken at the London Wetlands Centre at Barnes on 13th March 2006. The bird was feeding with redwings, song thrushes and blackbirds.