I picked up my eggs this morning and one had a smear of blood on the outside of the shell. What would cause this and should I be concerned? I dont know which one of my girls laid this egg but I think it was the first egg from one of them. I think I only have 2 out of 6 that are laying fight now, but the shell was a little different than the others I have been getting. This leads me to beleive its a new girl that has started. Thanks for the help.