The buried bus is the coolest thing I've ever seen!
To keep our coop cool, we've insulated it very well, and have painted the exterior white. Apparently, light colours on the outside don't absorb sun's heat but reflect it back into the atmosphere. Dark colours, on the other hand, absorb it.
We also installed a ventilation fan at the very top of the coop to move the hottest air to the outside, and draw in cooler air from a ground level window.
Lots of clean shavings in the coop will also help them stay cool. The like to burrow into it to stay cool. I've got a thermometer in the coop at ground level and also at the 4 foot level, and there is a 4 degree (C) difference from the top to the bottom. Seems to work!

To keep our coop cool, we've insulated it very well, and have painted the exterior white. Apparently, light colours on the outside don't absorb sun's heat but reflect it back into the atmosphere. Dark colours, on the other hand, absorb it.
We also installed a ventilation fan at the very top of the coop to move the hottest air to the outside, and draw in cooler air from a ground level window.
Lots of clean shavings in the coop will also help them stay cool. The like to burrow into it to stay cool. I've got a thermometer in the coop at ground level and also at the 4 foot level, and there is a 4 degree (C) difference from the top to the bottom. Seems to work!
