Baby chicks need to be warm, they need a clean spacious area to move around and be active in, they will be hungry when they arrive so I would have chick feed on standby but begin with a nice big meal of hard boiled egg yolks. As much as they want to eat of the stuff. That will perk them up after...
We ordered two dozen Black Jersey Giants and we received a Black Cochin as our exotic. She looked almost identical to them at first but them feathered feet were a give away. Here she is at two weeks old.