We've almost completed our coop & run. We have windows on three sides. So far we have 1/2' welded wire coverings, but HE thinks we need wooden slide coverings to close off and SHE thinks 1/4' plastic slide coverings would work. Do chickens ever need daytime darkness? Or for that matter ever need to have total darkness? FYI, we almost never have thunderstorms (with lightning) The window slide coverings are strictly to control wind/rain. Any opinions?