I am finishing up my coop and am wondering about a floor "door" vs a traditional wall door for my chicks to access their run. The coop is about 24" off the ground with an attached run that includes the area under the coop. The reason I ask is because the wind really blows here. I didn't think about this much when I built the coop, but the only wall that would access the run is the West wall. With the door open the wind would blow through the opening and create a pine shaving tornado! Seems like the floor "door" would be better for heat loss in the winter too, as heat rises. I have seen this door design in some 2-story tractors, but why do I not see this often in a more traditional coop/run? Thanks!