I received a few older chicks from a friend, about 3 weeks ago, and they are now around 7-8 weeks old. One of them seems to be having a issue, but no one is acting ill at all. When I first got them I thought it might be stress, because it seemed to go away. I moved them out to their grow out coop a couple of nights ago, this morning there was a BRIGHT red streak/splash of blood across the coop floor and a seperate bloody poop! Does this sound like coccidiosis? They have never been outside of a brooder and have always been on medicated feed. Should I go ahead and treat the whole flock? They've been socializing through a fenced area and have taken turns in the same yard. If I'm treating, for this do I need to toss my eggs too? ETA: If I make a guess, it looks like only one might be infected, I'm going to try to figure out which one.