When I was vent sexing my birds I noticed that one of the 5 hens had a cherry red, round mass about 1 centimeter extruded from her vent when I lifted her tail 
		
		
	
	
		
	 .  It receded back into her vent almost immediately & doesn't extrude when she is free........ 
		
	 .........   I am not sure if this hen is laying.  I have never gotten more than 4 eggs in a day.   I am thinking I should cull her?
	
		
			
		
		
	
				
			
	
	
	