...and looking pretty good so far! We are having a ball with them. I am planning to move them outside the week before Christmas, they will be 6 weeks old then. It is pretty cold here, we are in the Coeur d'Alene Idaho area, think Spokane WA if you are unclear where CDA is. I gather supplemental heating is not necessary unless the temp drops considerably, like single digits or below zero F. I am asking again just so I don't go off half cocked and freeze my girls... ;-) I can see how they stay warm, they do generate some collective heat to be sure. Their coop is pretty solid and tight too... If anyone has concerns or input please advise, thx.