I always dose up my shipped chicks with poultry drench. I put 3-4 droppers full into a quart of water. It always helps survival rates.I'm not sure one's going to make it. It's spending a lot of time sleeping. I've made sure that it's drinking, but it's not doing much else.
These are decidedly not predator-proof, if the predator is at all determined. They probably could be made to be with a bit more money spent on materials.