Death and regeneration anyone?
The bird goddess came back looking a bit scabrous - which I find hilarious. The symbology of the bird goddess is that of death and regeneration. Our culture pretty much freaks out about death. One can argue its because we have lost our connection with the "regeneration" or rebirth part of the cycle of life.
So having her come back so odd and unpretty is, well, pretty much in character. :)