Is your black australorp by itself with others? Roo or no roo? I'm wondering if/when I do place in them in the coop, if the hen that was sitting on them would "take over" again in making sure no one messes with them.i've got 3 just hatched on 1/10/13... it's down to under 20 degrees outside at night, and i have no heat lamp........ my black australorp takes care of them just fine.... went out there today and the 4 day old chicks were running all over the place, then back under mom to heat up then run around again, it was probably 30-35 degrees out when i was out there...... letting mom do it is so much easier....
Good to know! These chicks were hatched on Christmas by one of my silkie hens and I moved her shortly after because we couldn't get near the chicks without her going after us. I have two small children who love to hold the chicks and I knew if I kept her inside with them they would never get held and used to us. They're 4wks today and have been without a heat lamp since Thursday and have been doing just fine. I feel like no matter where I had placed it or how far away it was from the brooder they kept to one corner away from the light, so I just removed it all together when we lost power that day.I raise chicks all year round, both with broody hens (mine prefer broodiness in the winter, go figure!) and with an incubator. I keep them in a garage brooding box with two heat lamps (it's quite a large box, about 10 foot by 5 foot), then as soon as they're feathered out they go outside into the big coop. In really cold weather (in the 20s) I do exactly what you're describing, even though it doesn't look very classy - I run a 100' extension cord out there for a heat lamp. I've been doing it this way for about four years, and haven't had a problem. I've moved them out of the brooding box as early as three weeks, although their mama was with them. I think the chicks that leave the brooding box earlier make for stronger chickens in the long run.
I guess my main worry is them going into "shock" when they go from the 67-68 temp inside to the 30-40 temp outside, IF it gets up to 40. I'm in NY and it was 50 over the weekend but temps have dropped back down into the 30s since then. I'm also worried about transitioning them into the bigger coop with my two hens and roo. I'll obviously start with keeping separated but placing them outside in the shed. And maybe wait until it's warmer out to have them free range a bit while I'm out there and the others are free ranging. This way I can watch the older ones around them.