This spring I'd like to hatch some chicks, but all of my chickens are together.  If I want to make sure my barred rock hen gets fertilized by ONLY the BR roo, how long do I need to keep them isolated from the others until she's only going to lay eggs w/ BR sperm?  
Does that make sense?
	
		
			
		
		
	
				
			Does that make sense?
	
	
	
	