My chicks were hatched 1/1/17 (so they're 2.5 months). I've had them outdoors for about 3 weeks now. I live in central NC with moderate winters. They had a heat lamp on for the cold nights, but honestly, they roost far away from the heat lamp. Now that we're having cold temps again, down to 22*, I am thinking they need their heat again. Tonight the rain leaked through a tarp and ruined the heat lamp. Should I rig new heat for them tonight or not?