No Gary that looks more like one of the tit family. Here's a link to the RSPB site showing a picture of the Blackcap male and female.
The RSPB: Blackcap
And your description of the fat balls is correct, I have them in a holder. Not sure what your bird is because of the way you name your birds, I think what you call a blackbird is what we call a starling the blackbird over here is entirely different.