I have 4.5 years old ex-battery hen that hasn't laid eggs since last autumn after a very thorough molting (she lost almost all feathers). Now it is spring here, new grass is growing and hens have had earthworms, snails etc they have found in the garden, in addition to poultry feed (currently chick feed, as I have 6 weeks old chicks too). Grit has always been available in the coop. She looks great, her wattles and comb are nice red, but still no eggs. For about 8 months now. The other ex-battery hen (3.5 years old) lays occasionally, but only shell-less or weak-shelled eggs (and eats them), but the older hen hasn't laid even such eggs. She just stopped during molting and that's it. Is there a possibility that she will start to lay again? Or is she too old already? I'm not going to kill her anyway, as she is almost the first hen I got and I have enough younger and laying hens.