Hi there, today I went down the road to a friend of mine and came home with 5 of her hens. In April I went to our local store and ordered thirteen chickens and they were delivered on May 1st. I have 6 breeds from the chicks and the 5 I got today are all mixed. I have the chicks inside the house in a brooder. Right now the 5 hens are in a 4' x 8' chicken tractor over one of my garden beds. It has a roosting area but I just went out to check on them (the sun just went down) and they are all under the upper area on the grass. I am a bit worried that they will get damp and sick, is it ok for them to sleep on the grass over night. When I checked on them one of them was sleeping up top in a nest box and 4 of them must have been underneath but I couldn't see them.