Free range can work, in theory.  This spring, I visited Maui and was astounded by the large number of feral chickens.  They were everywhere.  Lots of broodies with babies in tow.  Some broods were quite large.  I never saw anyone feeding them and you are discouraged from doing so.  I imagine a year around mild climate helps a great deal.  
The chickens were on the small side and generally game-bird like in appearance. I would guess egg production is not terribly high.
	
		
			
		
		
	
				
			The chickens were on the small side and generally game-bird like in appearance. I would guess egg production is not terribly high.
 
	 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		