Ah well I have an enclosed yard and i could also build like a chicken wire fence around their "coop" when I put them in at night. But can Pekins fly? Will they come back? Haha stupid questions I know but like I said I've never owned ducks before lol :/
No, haha, Pekins most certainly cannot fly, they're like just about the heaviest duck breed out there. If you have hawks and other flying predators you might need to put up netting wherever you let them free-range, but other than that they're generally fine during the day in my enclosed yard. I've had escapees, but only when I forget to close the gate. I don't put netting up and I've been fine so far.