I have gone to the hen house the past two days and found 2 eggs each day that had blood on them. There was no blood on the back of any of the chickens. The eggs were on the larger side. The last time I had an egg with blood on it a couple days in a row I ended up with a prolapsed chicken...what a mess. This has happened before and then stopped. What is this? Why is this? Should I be worried? Is there anything to do? Do we not know what this is? There is quite a bit of blood, but not clots.