I have 4 buff orpingtons.  2 are only about 7 weeks but my other 2 are just about ready to start laying eggs.  I have 2 nest boxes.  I have been making them available because once my girls start laying I would like them to go in there.  However, SOMEONE, in pooping all in the back of the nest boxes.  I have yet to catch any of the girls in there but they leave the evidence behind!  They have a roost and yes the roost is higher than the nest box.  What am I doing wrong? Do I need to close off the boxes until I actually get eggs?  Any advice would be REALLY appreciated.
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		