I haven't cracked it open yet- I am tempted though. All my new girls are 18 weeks old so it wouldn't be absurd for one of them to have laid. I have buff orpingtons, columbian wyandottes, and easter eggers that age. Otherwise I have 14 week old cuckoo marans, blue andalusians, and welsummers.
Well it's very nice to start getting them at that age. I had a hen that didn't lay til 8 months... what are your blue andalusians like? I think they're pretty but don't know about temperament, etc.