I have a 4 fully grown quail, 3 hens, and a rooster. Their droppings usually never smelled that bad however recently it's been unbearable to the point I have no choice but to fully clean and disinfect their cage every day. I have been feeding them manna pro gamebird feed all their life, water with some acv, and some pullet size crushed oyster shells. I don't know why this is happening, their poop seems moist but it's not diarrhea, it is hard but has a liquid residue which I am assuming is what's causing the stench. I would like to know why this is happening and how I can prevent it or neutralize the odor.