This morning I found blood in my coop. it looked still fresher. I couldn't tell if it was poop. it seemed like it may have been but then the pattern looked sporadic. I inspected all 6of my hens in that coop and found no blood sots, no indication of mite, and their vents. Everything looked normal. The only thing I seen on my one black hen's comb was a small scab. I don't know if that could have caused it all. Should I start Corid or wait another day and see if it happens again. the hens are 22 weeks old and started laying. I have New hampshire reds, white leghorn (religious layers), Astroloup,, ans a black giant. Any help or much advice appreciated!