I have 4 X 18 weeks old Australorps. At least 1 is laying and I think I know which one. 1 maybe 2 are also close and the 4th chook is miles behind development wise ( not a sibling to the other 3 ). Was surprised to find first egg yesterday and another today. Small but perfect eggs! When I got home today we found two very soft shelled eggs in nesting box. One even broke just by picking it up. I know that this can happen in the beginning but I am wondering if it is possible that this has come from the chicken that has produced the fine eggs the past 2 days which mean she would have laid 3 today or have the other 2 close to laying produced these soft shelled eggs? Thx.