Tonight when I went out to put my ladies to bed (count them, close the door, give them a little appreciation for the great job they do & make sure the feeder was lifted high off the ground) I found 6 of my hens sitting on the floor instead of roosting with the other 14. They are in the corners and under the nesting boxes almost like they are hiding or out of the way. Anyone had this happen or know what may cause them to do this?