I know from what I read it should be opened around 16 to 18 weeks. What do you guys recommend? The reason I ask is because at least one will be 16 wks to 18 wks in the next few weeks. We are going out of town, or rather the country, for about 2 week starting next Monday. My oldest one I think will be around 16 wks either this week or next week. (not totally sure on the age as I got her about 2 to 3 weeks old where the rest were just a week or two younger than her) - Should I go ahead and open the nesting boxes? I hate to since my chicken sitter can't be there every evening to make sure they aren't sleeping in them. I do have a cat litter box I thought I would put in the run since it does get pretty hot here as the summer goes on. I live in South Western Idaho, which gets into the 100's at times. Thanks for your input