I have three ducks, a mallard, Khaki cambell and a big white one, all females. All have been broody at one stage but now two have suddenly today now not able to stand, can move their legs and flap their wings. The white one is fine but the other two are not stable! They are a year old and very important pets, I am quite restricted to what i can get, the khaki cambell also has sleepy eyes and doesnt quack properly, HELP!!!