Summing up and agreeing with most of what was said above, given the position of the sun, the bear, the trees, and everything would be in deep silhoutte, throwing shadows forward - towards camera. The light filtering through the trees would put dark slashes of shadow on the ground, which currently looks completeley flat and evenly lit. Regardless of where you put your sun, as dense as the trees are this whole area should be much darker and have higher contrast between light and dark regions. Our subconscious is VERY good at picking up inconsistencies about light and shadow direction. That's why it looks "wrong" to us.