I like the idea of what you are going after.. but to me the bird is lost in the branch...... I would have liked the branch to have been thinner and more delicate in order to emphasize the bird....... good try though
There's a good concept here I think, that just hasn't quite worked. The idea of silhouetting the bird and branch is fine. I think the problem comes from two angles - firstly where the two silhoettes overlap (composition), and secondly the movement of the wings needs to be stopped (focus/exposure) to make this truly work.