I've ordered from MPC two years running now. Last year, chicks shipped on Monday and I got them on Wednesday. This year, shipped on Monday, got them Tuesday. Both years all alive and healthy. Yes, they come in a small box, but they need to be a bit crowded to keep each other warm. My PO is very good about calling as soon as they get the box. I would not worry unless you haven't heard by late Thursday. I hope you get the news tomorrow AM that you have a box of chicks just waiting for you!!