A medicated fish bath (ideally using aquarium merbromin, alternately methylene blue, or potassium permanganate and salt), is generally a first step, as well lowering the aquarium temperature to 75 °F (24 °C) is a must, since columnaris is much more virulent at higher temperatures, especially 85-90 °F.
I have videos of them fighting in the air but my birds are 100% never caught in the air. They always return..but if the hawk come down in a sneak attack then thats a problem .
