We have two Australorps and one buff Orpington that are almost 7 months old. The Orpington and one of the Australorps have been laying regularly for two months and we consistently get 2 eggs a day. The other Australorp doesn't lay at all. Maybe 2 or 3 weeks after the first two started laying, we found 2 eggs (one or two days apart) with no shells. We thought that that was going to be the start of the third chicken laying, but since then there's nothing. Does anyone have a suggestion for what's going on or what to do? Thanks.