Do orpingtons ever fly?? like over the fence to go out to forage? I have that kind of set up and many of my birds fly over and go foraging - games, sussex, ee's. I haven't seen the orpingtons do it yet. I am wondering because I want to put them in a separate pen and I dont want them to fly out. I can put a top on it if i need to but I thought if they didnt fly out anyway, why bother? thanks!