I bought some spirulina a couple weeks ago from Golden Feast to use as a supplement for my cockatoo and macaw. I've been giving them very small amounts of it a couple times per week. But now I've done some additional reading about it as a supplement for humans, and now have concerns about it for my birds. Does anyone else have any insight on it's safety/efficacy as a supplement for birds? It's high in protein, but isn't any "better" than any other protein source. It's marketed as a source of B12, but that's actually questionable.