I just went out to let my girls out of the coop, and I noticed when I went to collect eggs (one sad, pathetic egg so far), I noticed the egg shell had blood on it. Not a lot, but enough that I noticed it as soon as I opened the door to the nesting boxes. Should I be concerned? The girls seem happy and healthy enough, I haven't inspected them closely today because I had already let them out when I went to get the eggs, but I did just lose my alpha hen last week, so I'm a little more on edge than I normally am. Does this happen sometimes, or should I be worried? The eggs I collected all this past week were fine. I should probably note, we do not have a rooster, so our eggs are all unfertilized.