my husband was gathering eggs and came to me concerned that one had blood on it. now i know a little blood is normal, but this one was covered. it was a blue egg so i had it narrowed down to who it could possibly be but they all look fine. there is blood all over the nest box, a perch, on the floor, and even on the window by the nest box...but no one is bleeding, and they dont have dried blood on their feathers. any idea what is going on?