I currently have seven buff orpington pullets (8 mos old).  I am considering adding 5 adult ducks.  They would be housed separately but would free range with my girls.  My question is this: can ducks be carriers of diseases that chickens are susceptible to?  Is a quarantine necessary/recommended?   Any/all input is appreciated!
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		