We have 6 RSL's that are a little over 2 years old. They have been using the same nesting box since they started laying. Suddenly they are all laying in the opposite corner of the coop on the floor. We get a lone egg on the floor every now and again but never have we ever had the entire flock use the floor. There hasn't been any change to nesting material, food or water quantity/quality. There are no predators around that we can find (ground is still snow covered and there aren't any unusual prints in the snow). Any ideas why? Is it just normal? I don't care where they lay their eggs as long as everything is okay, know what I mean?