I'm ready to winterize my coop! We get freak snowstorms in October here, so I want to be ready. Here's my list--what am I missing? 1. Heat lamp to extend daylight (do I simply set timer to shut off at say, 8PM each night??). What happens if it gets really cold--do I just leave it on each night? Will they sleep? 2. Heated waterer--should I keep this inside coop or leave it outside? They spend all day outside--will they continue that when it gets cold?? Now I have one waterer in and one in the run; but they only use the outside one. 3. I'm thinking about dog-door style flaps over my pop door (which is always open--run is secure). Will these work to keep out drafts yet let them go in & out? Is there a preferred material to use? 4. Ventilation: I have two large windows which I will close on really cold days. I have two vents up high; one 6" x 24" a smaller 2" x 24". I plan on always keeping these open. Enough if I open the windows on warmer days? (Coop is 4' x 6' and I have 3 birds). Anything else I'm missing before I head out there to remove my first batch of DL pine shavings to start again?!!! I'm not planning on physically going inside that (raised) coop again 'til spring if I can help it! Thanks for any and all help!