My cockatiel is about 7 months old and already knows how to fly. The problem with that is if anything freaks him out, he'll start flying around my room and hitting himself. No, not flying into the window, he hits the wall or in some occasions, the ceiling. This bird shop charges $15 for wing clip, nail filing, and beak trim. I was wondering if I should get just two of his feathers clipped but I'm not sure if it will stress him out.