I like the piece a lot. Very catchy, and has a nice momentum to it, and it held my interest all the way through.
However, I also had a bit of an issue with the opening part. The bird/ambience is quite nice and worked with the rest of the piece, in general. But I thought it opened a bit too bluntly. I wonder if a longer and more gentle fade-in might work better. Right now, it sort of arrives at full volume out of nowhere.
Just my two cents. Really nice work, overall, though.
Rob