They'll be fine. By two weeks old my chicks in the outside brooder are only under the lamp at night. Didn't you say you had ten? If they do get chilly, they will cluster up, but honestly I doubt they even know the light is offOk, I was going to start a new thread, but then figured I was being silly, so I'll just let you guys calm me down....
I'm at work, but I work with a neighbor. Her daughter just called and said our power is out. I texted hubby and he said it was out down the road from us when he left home too. So hopefully its a big enough outage that they will get it fixed soon. But this means my 2-week old chicks are without their heat lamp. They are still inside. Its supposed to be in the 80's today, but the a/c is on in the house, so the heat outside won't help the chicks much. I actually lowered to a 100-watt bulb last night anyway, I think they will be fine for several hours. Someone please just tell me they will be fine... (chances are good that I'll leave work by noon anyway!)