My hen, a Brown Leghorn, 2 years old, laid an egg and today I go to pick the eggs my 3 hens laid. The egg that my Brown Leghorn laid has a hole in it and I wanted to crack it, but is too hard, so is not a calcium problem. When I finally cracked the egg, it was empty, stinky, and the yolk is a dry molt. (My grammar is bad... Sorry.) I've check the Common Egg Quality Problems page on BackYard Chickens, but none of them match (some are very similar) my problem. If anyone can help, thanks a lot! I'm just hoping is not any diseases, virus, or infections because she doesn't look lethargy.