While on the subject, preening. Preening is a everyday event between mates, it's not something they do only when they have pin feathers. If you want to bond with your fid, then learn to preen and do it everyday. It's the act of searching that leads to bonding. My pet hen and i preen each other several times a day , everyday. You don't have to find any thing, just carefully take your time and look. 90% of the time i won't "pick" at a feather but systematically search her head,face,under the beak, etc. We know where the "pinners" are and discuss every day about if they're "ready" or not. You can explore all the way to the skin if you like but the act of looking is what creates the bond. If they're preening you, that also means they want it from you. It has nothing to do with petting,scratching , that sort of thing. It's the unselfish act of caring enough to look. Just my .02 worth.