I have 3 Buff Orpington hens that were laying on a regular basis until we moved them to a larger coop. One started laying again then they all went through a molt in May-June 2016. The packaging of the Purina Omega food changed and I noticed the pellets looked different. I tried other pellets but they aren't eating them and they don't go through as much water as they once did. I picked them up to check them over and notice they are thinner than they were a month ago. HELP!