My cockatiels seem to emit a fine white oily powder. I think it's from the cuticle of their feathers. It looks similar under a microscope anyway. Do all parrots do this? I offer them bath water every day and put an ionizer in the room. Are there any other ways to mitigate this? It makes it difficult to clean and makes my Mom sneeze. This stuff prematurely clogged up my IQAir unit. It's very costly to replace the filters. What's the best way to clean this shmutz? Am I doomed to live with this stuff as long as I have birds? Is there a safe kind of emollient I can add to their bath water or spray them with? My old boss (a vet) suggested glycerin but he has never seen birds before. Suggestions? Comments?