I have 3 black sex link, 1 gold sex link that are 5 weeks and 2 buff orpingtons that are 4 weeks. I am hoping to move them into their coop in the next couple weeks. They all have their feathers. Just wondering when is the best time to clip their wings. We have a 4 foot fence in the backyard and I don't want to risk them getting out when they are bigger and older. Thank you.