Hello! One of my chicks turned out to be a rooster who is five months old and I am noticing on my older, three years old hens feathers on their backs are starting to go missing, and I’ve had two with vent injuries. I remove the rooster into a separate coop. The chickens were soaked in an Epson salt water and I’ve been Putting anabiotic spray on them. I have Seem a little bit of improvement and then they lay an egg and it starts bleeding and looks really bad again I’m not sure what to do!!! This is my first time experiencing this situation.