I have a vague recollection of an animated feature.. I believe in the 80s or early 90s where there was some kind of flying creature or phoenix with very long, wide wings... there was a black one and a white one. As they moved across the sky they painted it black or white behind them. I believe the black one was representing evil and the white one was good.

I believe it was on TV but not for certain.

I've searched with no luck and this is about all I remember. If anyone has a clue I'd very much appreciate it!!

Skywhales (1983) (http://skywhales.tripod.com/) ?

Skywhales (1983) - Coilhouse (http://coilhouse.net/2008/01/who-else-has-seen-skywhales-damn-it/)?