I have 5 pullets of various breeds that are 24 weeks old. No eggs have been laid yet. Several weeks ago I placed three golf balls in a nest box...in an effort to show them where to lay. In the last couple of days, I have found a few of the golf balls rolled from the nest box into the adjacent coop (underneath the roosts). Yesterday I moved the golf balls back into the nest box, since I don't want them to lay under the roosts. Why are the pullets doing this? Should I keep moving the golf balls back to the nest box or let them be?