Wow, just wow.
I've been following the Classical section of the AP on a nearly daily basis. This has got to be the best piece I've heard for a year. The final part was awesome and unexpected, and I really loved your skilful use of different instruments. You set up the mood really well, and I can really vision a forest of animals co-existing harmoniously. I just wish there were more!
I do have a small complaint: that you could have removed the occasional 'dissonant' spots. I think your piece would be better off without them. That's just my opinion though.
Again, this was one awesome piece. Congratulations, sir, and thank you.