Great capture; when passerines look directly at you, for the most part, they really aren't that photogenic! On the other hand, raptors almost always look fierce!
My-my, that does look like a scowl on that little bird's beak. Funny how birds do seem to have a sour-puss expression most of the time when really I think they're one of the happier creatures out there. Precious picture of this little chap.