Nice idea. It's very hard to capture a scene looking from shade to bright light. It tends to be too contrasty IMO.
Suggestions: move the bird or change position (it just distracts where it is). I'd change the pov slightly and look up more, loosing the first dark patch in the foreground, and maybe look slightly up hill (or down!). I'd also improve the trees by tweaking the bump displacement on the bark, it's too flat and plastic like at the moment. Lots of potential here.