My hens are getting to be a major pain in the rear when I go out to feed them. They jump up in the air and bite at my hands, fly all over the place, knock over the feeder etc. I give them feed in the morning, and maybe a little corn if it's been cold, and then I give them a little feed in the afternoon/evening before they go to roost. I let them free range quite a bit (they're confined to a run more now since they have been hiding eggs). They are getting to be really obnoxious, especially my two production reds and the two sussex hens. I know they're getting plenty to eat. They have full crops, are healthy and shiny. I have one of those long trough feeders. Should I put up a hanging feeder so they have feed whenever they want? Will they just stuff themselves and I end up paying for more feed than they actually need?