Bird ID

What kind of bird is this? They've discovered the finch feeder recently. It seems very un-natural for them to perch on it....they've had to practice quite a bit to get used to it. From what I can tell, they're eating the niger seeds. I mixed in sunflower chips with the niger because I didn't think I'd have enough finches for a whole feeder's worth.  Oh, and the wind is blowing some of his feathers outward.....they're usually smooth.