brown bird with black head and wingtips, never seen one before

Have had thrushes and blackbirds as usual at this time of year eating fallen apples but this afternoon there was a black bird with brown head and, after getting binoculars, brown wingtips.  I googled it and Cowbird came up but not sure whether it has brown wingtips.  

It's bigger than an adult blackbird and the thrushes.  Anyone familiar with cowbirds in their garden?  I'm in Hampshire.  I'll keep my phone handy tomorrow to try and get a photo if it comes back.  Never seen one before.