If the bloom is still wet when you wipe it off it might be a little extra pigment but if it is not (dry) you want to take a look at your hen's vent. For larger then normal eggs and new layers it is not unusual for a little smear of blood but if this is a normal sized egg then they need to be looked at. You van put a little oil or Vasselene in the vent to help it come out easier. You also want to watch that hen for prolapse. They don't always get a prolapse but if they are straining for each egg it is possible.My Welsummers' eggs are spotted too sometimes, but when they're fresh I can wipe the color off, it seems to be darkened blood?? No blood or color in the nest box though and the hens are acting normal.. Is this normal?