Yeah I like the brass too. Totally would work for some interlude music on a PBS show. Is your forest anywhere near Downton Abbey?
I found myself focusing on the drummer's cadence, and I'm not sure I wanted to focus on that. From the listener's perspective, at least me anyway, I found it distracting from trying to follow the movement of the other elements. Drums like that usually infer that there's a battle upcoming or something military is going on, but the rest of your song brought very different imagery to my mind.
Oh, well, some forests have drummers, I guess!
nice work, nice orchestration!
cheers,
-Tom