I have 3 hens (a barred rock, an americauna, and a buff orpington) and only the barred rock is laying eggs. I have two nest boxes and the barred rock only lays in one of them and have tried putting golf balls in the other box to try and get the other two to start laying eggs in there. I'm not exactly sure how old the buff orpington is but I bought the Americauna hen as a chick in March and I still haven't seen her lay any eggs. They are free range during the day and are kept in the coop at night. I have also tried keeping the barred rock locked out of the coop during the day after she has layed her egg and left the Americauna hen and the Buff Orpington locked up in the coop to see if they will eventually start to lay and still nothing. I am new owner of chickens so this is my first experience with laying hens. Any advice would be greatly appreciated.