This made me chuckle at the whole "Circle of life" point to the short, probably would have worked a few more deaths in there though, say the worm gets eaten by a giant bird, giant bird gets eaten by something else etc, until you loop back around to the Pigeonien.
The animation was pretty bad, but it was smooth. This is your first attempt though, so that makes sense. Once you get a couple more animations under your belt, I think you'll see a massive increase in your skill (and ratings!)
The Audio was terrible, but I think that was part of the charm. Like the old "End of ze world" animation on eBaums world. Obviously as you progress, your audio will get more complex and sound much better.
All in all, well done on your very first animation, hopefully your next one is a little longer and a little better. That's all you can ask.