i picked up 2 ameraucana hens from a backyard breeder a few towns over. when i got them home, they had pooed several times in the cage and all looked good. i got them up at the house (to isolate them from my other chickens for a few days) and found 1 bloody poo. these girls are about 7 mos old. the breeder said they were on medicated feed as youngsters and were recently switched to grower as they're not laying yet. my question is, should i be worried? should i treat for coccidia just in case? what else could cause bloody stool? could it be the stress of the 1.5 hour car ride? or stress from my dog barking at them? thanks in advance.