Hello. I currently have thirteen 22-week old chickens, mostly plymouth rocks but 4 silkies as well, in an 8x8 coop and 10x20 roofed run. I'm thinking of constructing an arctic entry for their pop door which is currently just a hole with ramps on either side. At one point I had a door on it that I would open for them in the morning and close at night, but getting up at 6am every morning got old fast, so I've just been leaving it open. I'm not looking for warnings about how I should have them locked in safely as no run is completely predator-proof... while there are always ways something could get in we went pretty over-the-top with its construction and I'm satisfied with it and willing to take the risks. So if anyone has built anything like this, mainly just something to cut the wind, let me know! None of my searches turned up anything. I've thought about just doing the doggie-door type plastic strips method, and that would work fine for summer and maybe fall, but when we get sub-zero temperatures I thought this might be a better option for them? Tonight we're getting temps below freezing so I put a towel in front of the door on the run-side, but I want a more permanent solution. Preliminary thoughts: The opening to the pop door is something like 11"x11". So I'd make a wooden tunnel using four 11" wide boards, maybe go out one or two feet, then make a 90 degree turn that is a downward ramp into the run (silkies don't have trouble with the ramps, all four of them roost up high with the big girls). Would this narrow tunnel frighten the chickens? Maybe 11" is just fine for them to duck through but might be too scary and confined if it's a tunnel? Am I making this much too complicated? I've looked at a lot of the designs for the auto-doors, and maybe should just make one of those (the one using an old drill looked pretty neat), but I thought this might be an interesting option.