OK - so my 8 barred rocks are starting to lay, but for this past week or so some one is breaking an/her egg in the nest box.  Then this morning, DH let the girls out and turned to check the boxes and when he turned around, there was a egg right outside the coop, broken.  It wasn't eaten at all, just broken.  Could one of the girls be laying very fragile shells?  I thought that eggs were designed to be strong, on the whole. And the color of the shell seems to point to the same girl, since we get a variety of shades of brown.  Any ideas on what to do?  I've got oyster shell out, free choice, though the feed I have doesn't include it.
	
		
			
		
		
	
				
			 
	 
 
		 
 
		 
 
		 
	 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
 
		 
	 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		