I bought 7 australorps and 1 Buff Orpington the second week of May. I was told that they were 18 weeks old, which would make them 32 weeks old this week. One astralorp has laid an egg almost every day for the last two weeks, but NONE of the others. I feed them 16% laying crumbles. What is the deal? I don't know anyone who has chickens, so I can't ask anyone! Please help!!!