The owl shot is a great capture. I know that shooting wildlife is really tricky, but to be picky, I don't like the foliage in front of his face. So next time, ask the owl to move over a bit before he poses again for you
Not a fan of the little bird picture.
While in some cases, having a centered composed photo works, in most cases it doesn't. There is a tad too much space behind the owl's head (left of frame), but not enough to hurt the image.