We bought our coop pre-fabricated to save time. We're in Texas and our summers get pretty killer so I'm thinking my coop will need more than just a couple of vent windows since I know that for me, opening a window on a hot summer day is no different than camping on the sun itself. SO, I'm not sure if I'm needing a fan to get air circulating or if I need an exhaust fan. Either way, I'm wanting to find a solar fan. That guy (the sun) is one hot miserable mess so I figure I might as well put him to work for me. Does anyone know where I could get one? Running electricity to the coop would be next to impossible but I know my girls will need a cooler breeze in there.