I didn't know tomatoes could potentially be harmful. I have a book about Senegal parrots and tomatoes are on the list of foods they can have. So I've given them to her before and also I gave her some spaghetti with sauce. I'll be sure not to do this often now. Not that I gave her large amounts of tomatoes anyway, but I did give her a couple of small pieces along with any other vegetables I happened to have on hand.