I'm planning a flight pen for my bobwhite quail.  I'm going to have plywood along the sides about 2 feet high and above that, 4 feet of hardware cloth.  Not sure about what to do for the top.  Hardware cloth is super expensive, but if I build a roof it will need support for snow and that will also bring up the cost.  What do all of you use for the top of the pen?
	
		
			
		
		
	
				
			
	