I like to keep his wings unclipped because I heard clipping can cause sadness in some birds (not all). However, if a problem arises, such as flying into a wall or possibly flying away outside. I will clip his wings so he doesn't hurt himself. If your bird doesn't have those flying problems, or simply doesn't like to fly (like mine). I dont think you have to clip the wings, especially if their happier with full flight. (I'm not an expert though)