I'm looking for insight into the egg-laying behavior of one of my hens - a two-year-old RIR. For the first year of her life, she laid like a champ, but this spring through now her egg-laying has been almost non-existent. Is this a reproductive system problem? She has gone several weeks without laying at all, but she shows no signs of being egg-bound. She did have an illness that I diagnosed as worms (very runny poop, no appetite, lethargic), so I dosed her with Valbazen. She perked up shortly thereafter and even laid a few (albeit irregularly shaped) eggs. She still seems pretty healthy, but now she's resumed her boycott on laying. In between, she has laid a few tiny eggs with no yolks and soft-shell eggs, but not many. Has anyone else had experience with a hen that has stopped laying? Is there a treatable underlying disorder? Thanks for your help!