I have been having the same issue. Today, I happen to be at home so I've let the roosters out and left the hens in. The roosters are super annoyed but the hens are grateful for a day of rest and hopefully, they will go to the nest box. I have two newbies that have figured it out so far, I have about 10 more to go that are laying age. Judging by the number of eggs I'm finding in my yard - I better get another 10 eggs in there today. The top rooster is about to have a total conniption so the girls better get to it!