We've been hatching out chicks since September, brooding them in the house for 4 weeks or so, and then putting them outside. Last week, we received a couple small chicks from another source locally, and were surprised to find that those chicks, half the size of ours, have already feathered out. We didn't talk to the lady about it, but we talked about inside brooding and she acted like it was alien to her. I'm relatively sure she had the chicks outside the whole time. So we're wondering...keeping them inside and warm, rarely letting the temps go below 68 for the first 4 weeks...are they slower at feathering?