Hi guys, we have had five chickens in a spacious coop for going on two years now. The chickens have always gotten on fine, and are extremely passive compared to chickens I've seen in the past. This morning my dad got up to clean the cage and found four of the five chickens had blood pouring from their bottoms, they wouldn't come downstairs (two storey chicken coop). One chicken had what looked like feathers and blood on its beak and was chasing the other chickens around. We are kind of at a loss at what to do, since the internet says to seperate injured chickens, but we haven't got the room to seperate four chickens individually. Also, what do we do with the crazy chicken which is now isolated from the group? Please help, we are kind of panicked as to what to do