I have a future garden area that I am wanting my chickens to till up and do some pooping in. It is about 30 yard away from the actual pen area. Getting them out there will be a little bit of a hassle. I am wanting everyone's advice on how long I should leave them out there for the day. I have a mobile fence set up for them in the garden area and they will have food and water. This will only be a couple days per week type of thing. Does anyone see any problem with leaving them out there from morning until the evening?