My 3 hens are temporarily in a doghouse in our shed while we finish the coop. There is no nestbox, they lay in the doghouse. Normally I am able to check on them several times a day, let them run around the shed, etc. But Monday I had hand surgery. Yesterday I could only check on them once. Their eggs were under some bedding and had poop on them. Two of the shells have brown stains on them. Are these safe to eat or not? I'm new to this and just curious. Thanks!