Agree that it's essential for ducks to be able to duck their whole head in the water. I have 6 ducks and I am constantly out there cleaning their area. They are messy and love water and that's just their nature. Maybe you could build a separate area away from the chickens so that the ducks can have their water fun and not mess up the chicken area.
	
		
			
		
		
	
				
			
	