In the summer heat, locking them in a coop for 3 days just might be a death sentence.  I would set them up with a run attached to the coop.  Even if they are ALWAYS free ranged, there are times IMO when it's just prudent to have the option of using a run:
Predator comes calling.
Training new birds to coop OR NEST.
You have a broody and chicks, and know that letting such little nuggets out to free range would be a death sentence for them.
	
		
			
		
		
	
				
			Predator comes calling.
Training new birds to coop OR NEST.
You have a broody and chicks, and know that letting such little nuggets out to free range would be a death sentence for them.
 
	 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		 I’m so sorry for your losses. It’s good to have you here
  I’m so sorry for your losses. It’s good to have you here 
 
 
		 Welcome to BYC!
 Welcome to BYC!  So sorry about your chickens...
  So sorry about your chickens... 
 
 
		 
			
		
		
		
	
	
			
		 
 
 
		
 
 
		 
			
		
		
		
	
	
			
		 
 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		