My daughter has about 25 hens of various ages. The oldest would be about 3 yrs old, the youngest about 6 1/2 months. She free-ranged them all until about 2 weeks ago. She was getting 1 or 2 eggs per week...then None! She pinned them all up in the coop area and still gets ZERO eggs per day! What is going on with her flock???? We are at a loss. She is giving them extra protein. They do not seem to be moulting....if so, it is a a very light moulting this year. Your advice is desperately needed!!!!