nest boxes?? is this something we should start to encourage? they are almost 12 wks... I know we have at least 8 more weeks before we should even THINK about possibility of getting eggs at the extreme earliest...but its been said that my hens are kinda uh..umm..unique in their mental abilities lol... soo...honestly; with this being our first flock; should we encourage them getting in there?? or no..they'll go on their own???