Hi, can anyone offer me some advice? I have 3 chickens, got them almost 4 weeks ago, and they are around 24 weeks old. On Sunday one of them started laying but soft shelled. We have now had 5 soft shelled from her and one with a very brittle shell that broke when we picked it up (she has laid 2 today.) another one of the chicks laid her first egg today, althought it was much better formed than the others we've had, there was still no shell! They have the recommended layer pellets, plenty of fresh water, a bowl of grit and I have also given them roasted and crumbled egg shells mixed in with rice as a treat. I've got oyster shells on order now to see if that helps, but I'm not convinced pullets should be laying soft eggs for this long, and now there's 2 of them at it. what does anyone think? thanks.