I have all kinds of chickens. My problem has been with my silkies & frizzles. And as far as I know it has only been the hens. One day they are fine then they start drooping their heads. They just kind stand there with their heads hanging, and most of the time their eyes are closed. They do this for about 3 days and then they die.........WHY??????? What do I need to do or what is it? I have lost 3 in the last month & I have 2 right now doing the same thing. I LOVE my chickens and it makes me sad.