Every once in awhile one of my hens will lay an egg with a blood spot in it or a dark brown spot.  I have no roosters.  What may this be?  I need an answer for my sister who seems to think something is wrong.
 
Thanks,
 
Deb
	
		
			
		
		
	
				
			Thanks,
Deb
 
	 
 
		 
 
		 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		