draft free coop door

[schemi]

I was out in my coop today and noticed the only draft I have is the door for the chickens. It was about 27 deg. when I was in there and a big gust of wind blew right through the door and up out the vents. What are my options to seal the door in a way to let the chickens come and go but keep the draft out. I don't want to lock them in because they like to go out at night. I did make a short tunnel in the run changing the entrance 90deg hoping to deflect some of the wind.

 

[aart]

90 degree tunnel should work.....
....or strips of heavy clear plastic added a few at at time to teach them to push thru them.

But you really should keep your chooks locked up safe at night to protect them from predators.