Garden visitors

I've noticed these birds are coming into the garden and kept trying to photograph them, especially the robin. Most people are at work so it is lovely and quiet during the day now the builders have finished and all you can hear are birds singing. There was one high up in a tree singing so loudly wish I could identify it. 
Thank you so much for all the comments and concern for Obi. He didn't need an op in the end, its his knee that is damaged and he's been put on 6 weeks rest. Jade sent me a picture of Luna face timing him this morning, whatever next!! Since he got home she hasn't left him alone licking him and checking on him, being the concerned big sister!