My chickens have all but stopped laying eggs. I have 10 chickens, which are two years old, and I have 4 that are almost 6 months old. We did get rid of our rooster as he was becoming so aggressive, but that is the only change we’ve had. Today, there was one egg, but it wasn’t formed correctly and was rubbery. They mainly get laying feed, but I do throw out scratch for them every day. Any suggestions?