I have three chickens that are about 12~14 weeks old. I've had them in an indoor coop, and thus morning introduced them to their outdoor coop that we added on. They are normally very active and energetic, and as soon as I put them outside, one of them ran around for a few minutes, then hunkered down in the dirt and began rolling around and burrowing herself in a hole and doesn't show much interest in moving out of it at the moment.she doesn't seem to be having health issues. Is this normal?? Thank you!