Help with Identification

We have had this little guy/girl in our garden for a while now (or so it seems). His behaviour (hopping along the ground, messing around in the bottom of the hedge etc) seems to suggest a Thrush of some sort - but his colouring seems like that of a young blackbird - but I am fairly sure this is at least the second summer we have seen him/her! Any help would be very much appreciated. The file attached is a pic - will also try and post the pic properly. Thanks