Second window placement, need advice

[sparklez]

I want to put in another window in our coop. For ventilation, light in winter when they are inside more, and air flow in warm summers. My coop is 4x8 with 10 chickens, 3 roost bars. They really are only inside the coo to sleep and when the winter weather is bad and very snowy I love in western New York so we got warm summers (high 80s in July) and cold snowy winters. Currently I have one window that faces south and a 4 inch x 4 foot vent at the top of the coop that is always open except in very cold or very windy winter spells. I am thinking of putting another window on the north side but not sure what exact size and location. Should I put it closer to the roost or a little lower and centered on the coop.
Any advice or ideas would be appreciated. It would likely be closed all winter to prevent a cold breeze - out windy typically blows north to south
Thanks

 

[Ted Brown]

Prince Woods of Woods Coop "fame" argues that year round open air coops are healthier for both chickens and humans.

What about a non north wall that gets more light inside but also remains open year round? Positioned so that no drafts hit the roosts, no window required just an opening with hardware cloth.

 

[sparklez]

The sides of the coop face North/South, tall side faces East, Short sides West. I could add something above the nest boxes on the west side but it would be lower - probably a little below roost level but around 6 feet away. I already have the long, narrow opening on the top of the tall/East side (above roosts). Or i also thought about making small vents at the very top of each tall side. It would be about 18-24 inches above the roosts.
So thats my dilemma, its not a perfect situation. We do a have a shed north side that may block some wind, and the winter wind isnt always N-S, just we had a big snow storm last year and thats where the drifts seemed to blow the most.

 

[sparklez]

I guess i could also lower the roosts in the winter to give them more head space under a vent... They are probably about 3 feet high now.

 

[Ted Brown]

Woods orients his coops south, slightly east. Your picture above with 2 sides sun are where you should be adding ventilation.