If this is your first foray into tending chickens you may not be aware of the strong odor that chickens produce. Yep, we said it, chickens are stinky! Maybe not the chickens but their droppings certainly are. Our coops come with windows and ventilation lids and they truly are sufficient, however, if you are sensitive to smell or just want more air through your coop, an exhaust fan may be right for you. Lots of info about our exhaust fan - is there a thermostat.