My coop is movable. The original plan was to move it every week or so to give the girls fresh grass and not kill any yard. But that turned out to be a big pain (though I now have some REALLY healthy sections of yard from the early experiments) and we put it on concrete with a sand floor of the lower level/run. It's starting to cool off here, and I'd like to use this weekend to get the coop in the best spot for winter. My two options are: Near the house. This would protect them some from wind, make it easier to collect eggs in bad weather. Easy access to electricity for the water heater (and heat lamp, if needed). But...the house shades this area from the sun. We could put them in a nice sunny patch in the yard. This really might help to keep the coop warmer. It has a dark colored roof. It's farther away from the house though, and DH doesn't particularly want to run power down there. He will....but honestly, it would be kind of ghetto. Will the warmth from the sun be enough of a benefit to outweigh walking through weather for eggs and running electricity out there? Also, what are early signs of inadequate ventilation? Ventilation is easy in the summer but harder in the winter. I think I have it right, but since this will be our first time....I want to know what to look out for and fix the problem before it harms our birds!