Black-throated Blue Warbler

Beautiful little bird, terrible photo. I saw this while out on a lunch walk with a colleague. It was nipping at the buds on the birch trees. I was going to take along a proper camera but did not. All I had was my crummy phone. So, here it is. Cropped and cleaned up, it isn't much but I wanted to mark the occasion. I do not think I have seen this species before. I certainly haven't blipped them.

Field Guide notes on the Black-throated Blue Warbler.