We're in the process of designing/building a coop that will be located in upstate NY (Capital Region Area).  In the winter it can get quite cold (sub-zero on the coldest nights in the winter).  Do coops require insulation in climates such as this?  Does a heater inside on a thermostat suffice?  Both?  I'd really appreciate some general thoughts design tips/advice from some people who have gone through the winter before regarding what they've learned in the past.  Thanks in advance!
-Tanya
	
		
			
		
		
	
				
			-Tanya
	