Little bird, little bird...

I went for a walk at work, and stared at a bush for a long time after watching two little birds disappear in to it. I didn't catch them in the bush, but my patience was rewarded when they stopped on a tree not far away, and I caught this:

He's a little far away, I had my zoom at its limit, but I'm pleased that the little bird is in focus, and facing forward! I get a lot of views of bird butts.