The sky above

If you look on the branch in the left center, you'll notice a black blotch. It's a shame because all of the photos I took today have it. In this one it kind of blends into the tree so it's not that bad. But other's were great photos (well I thought so) but unuseable because of this. I checked my camera lens, and it is clean. So I'm not sure what is going on.
Looks like I need another new camera :(