Right now the heater probably isn't hurting anything but it might make it harder for them to adjust to the cold outside once the temperatures start dropping.
If you really want them roosting right now, I agree with the advice to wait until it's very nearly dark, and manually place them on the roost. If you have other, older birds, make sure to place the little ones well away from the adults. Most chicks will get the hint after a few nights.
If you really want them roosting right now, I agree with the advice to wait until it's very nearly dark, and manually place them on the roost. If you have other, older birds, make sure to place the little ones well away from the adults. Most chicks will get the hint after a few nights.