So let the girls out to roam this afternoon and noticed our 8 month old SF must be having some issues with diarrhea based on the soaked feathers around the vent and the crust built up around the vent as well. I've read that giving them Plain yougert might help, is there anything else I can or should do? I did notice one of the other hens had a very watery poo as well so may isolate these two for the time being. Any other suggestions will be greatly appreciated. See pictures below.