Hi there!
We have 3 chicks (2 orpingtons - lavender and blue - and 1 barred rock, all about 3/4 days old). I know you're supposed to put day old chicks under a broody hen - and these are 3 to 4 day old and op top of that, the hen is not broody...
We do have a heatlamp and the whole chick set...