Thanks guys. he's still on our street but quite a few of us are looking after him with food and water. he's so tame he was eating out of my hand so I could see the rings definitely have nothing on them but are just fluorescent green slim plastic. what would they mean? I hope he'll survive - I've grown quite attached to the little thing! I had a look and think his markings are that of a japanese highflyer. Thanks for your replies anyway RB