I received chicks yesterday and one was really weak at the time. It is still not eating as much as the others. I noticed these droppings with watery brown liquid around them. Is that normal? I'm not sure if it is from the weak chick.
That's not abnormal for chicks. It could indicate an overheated brooder, though.
It's not necessarily associated with a chick that is weak. Try giving the weak chick some warm sugar water and a few drops of Poultry Nutri-drench ever few hours until it perks up.