I originally thought maybe he was moulting. Birds molt, right? But it's been weeks, and this guy still looks like he got a haircut at Blind Birdy's House of Flailing Shears. So I am stumped. It's like the titmouse version of Phantom of the Opera. All he needs is a teeny little mask.
He doesn't seem to be slowed down at all by having the scruffy head, and I find myself calling him "Scruffles" to my everlasting shame, although I'm trying to quit.