First thing I would do is get rid of that copyright statement. It is distracting. If you want to copyright your images put the statement in the lower left or lower right corners and make it very small - 8 to 10 point type. A copyright statement will not stop someone from stealing your images. It can be removed by someone with a bit of Photoshop knowledge, in a matter of a few seconds. Other than that, the picture isn't too bad, but a small bit of fill flash might help (I know there are those who would claim this disturbs the animals, but I have been using it a bit for years and so far, no problems - in fact, I have yet to see an animal react to it, but then I just use a very low amount, with the flash dialed way down.)
WesternGuy