A friend is having this problem and we can't figure it out. They were laying excellent. 8 hens and was 6-8 eggs a day. All hens are a 1 1/2 yrs old or less. Layer feed available 24-7 oyster shell available 24-7 No evidence of egg eating Hasn't seen any egg eating predators. A couple were molting but no eggs from the others. The others do the squat when you walk up to them. Hasn't found any hidden eggs outside the nests. At first we just thought they were taking a break. Then maybe something eating them so he kept an eye out and would go out several times a day to check. Nothing. Then maybe because it's getting colder. Less light too. But he is going on two months with zero eggs. Any ideas?