I like both of them. In the first, I would crop out the person walking in the background, and possibly crop in from the right also. I really like the the second shot, and I think the tree near the center has to be vertical, as it is, which means the rest of the scene must be at that angle, which adds interest for me. The contrast made me almost see it as a negative, in parts, and I find it a very interesting photo. Certainly not just a picture of birds in the park!