This is our first time owning chickens and we have 4 Rhode Island reds and 3 top hats. the reds are about 5 months and the top hats are 3 months. we have a fairly large coup with plenty of room but it seems as if the reds are running the top hats out into the weather. the tops spend the night in the far corner of their run instead of the coup. just curious if this is normal behavior and anything to be concerned about.