Check out this thread. Several of us ordered from McMurray and had problems with the delivery. There are a lot of good ideas in this thread that you can use to ensure your new shipment gets to you in good shape. The problems are not the hatchery, but the post office. In cold weather, they just aren't trained to watch out for babies.
https://www.backyardchickens.com/forum/viewtopic.php?id=439411
https://www.backyardchickens.com/forum/viewtopic.php?id=439411

