The rest of the animation is swell. The timing is so far out that every key pose is accented to match the syllable of the recording. I love the anticipation for the feathers curdle for the blow of the first syllable of "Garbage". The waddle does represent itself well for following through for the head a few frames later.
I suggest to fix the crest; after the second syllable of "garbage", it looked like the head is going in reverse playback. The neck should be thicker in "eat your intestinal..." and thinner in "..garbage".