Yes, definitely a male Blackcap, one of my fav birds. They love suet cake, so if you dont have any suet, get some.
Every winter I get at least one that stays for a couple of months and then goes off. Had one male and one female 3 years ago, then just a female came and I havent had a male for the last 2 winters.
I have a female that is visiting regularly at the moment. She has been around since January and still here which is the longest I have had one stay, so I am hopeful that she might hang around this summer (and bring a male lol).
The female has a chestnut cap on the head and although they are a relatively plain colour, their plumage really is beautiful.
Hope your male hangs around a while - and listen out for his gorgeous song.
Linda