OK, so, I inherited a coop and 2 full grown hens that were a year old. Both lay faithfully every day. Of course when this happened, my kids thought it would be fun to surprise mom by bringing home the $3 chicks from the hardware store (learning chicken math already). Fast forward. The chicks are doing well and are about 12-13 weeks now. I was under the impression that they wouldn't start laying till 18-20 weeks? This morning I got my usual eggs from my big girls but there was also 2 small broken eggs with soft shells elsewhere in my coop. Could these 2 little girls be trying to lay already? Seems unlikely but any other explanation?