I also have a Blackbird friend. It started when I realised that he quietly followed me (just inches behind) as I weeded. He was obviously looking for me turning up potential grubs and worms.
I call him Shadow (as in me and my) He now has his own 'swing' It's meant to be a hanging wooden bird table hung from tree, but he just uses it as a swing.
He is so sweet.
Also, yes it is bloody bitter. As others are said, feels colder than it says. My bungalow has concrete floors and it hasn't been properly warm in here for weeks. Doesn't matter how much the heating is on.