I have a 35 year old African Grey named Walter. Well many months ago I had him on a specific type of feed and he became ill. After an expensive round with the vet we got him healed up and feeling better. (We didn't think that it had anything to do with the food as he had also gotten a hematoma which had to be removed). Anyway, just to be on the safe side, I switched feed until I knew he was all healed up and had picked up the weight that he had lost while sick. So the other day I bought a new batch thinking I would slowly rotate him back. I fed him one pellet. A couple of hours later he had some foam that he had regurgitated. Now I am paranoid about the feed and won't try it again. The problem is that at his age he is very picky and won't eat any of the pelleted diets anymore. I know that a seed based diet is not ideal and I do supplement his feed with fresh veggies, fruits, rice and other goodies from our meals that I know are good for him. Should I worry about his seed fetish? I know that pelleted diet is supposed to be better for them but I also know that if we were given a pelleted diet, we would rebel too. Also do you think that he may be allergic to something in that food? Could that "aversion" be part of the reason why he loathes pelleted food? Just wondering. (BTW, since I have not fed him anymore of the feed, he has not had any more foaming and has been his active, noisy, eating drinking, taking a bath, playing kind of bird). Just wondering. I have had him since he was one year old and so we go way back.