Reptile Cage Heater

I went to the feed store today and they were selling baby quail for $1.00 There was only one left in the cage and he looked scared to death huddled in a corner, so I got him. The people who ran the feed store obviously knew nothing about them and said to put him in the bathtub till he was older and to feed him stale bread crumbs. He's about the size of a ping pong ball. I have no idea what to do for him. What do they eat? He drank some water when i brought him home, but I have no idea where to keep him or what to feed him. Right now he is in a petsmart box on a snuggle heater for reptiles and puppies snuggled up with one of my dog's quail toys. What do I need to do to properly take care of him? Thanks a million
No, I'm not going to eat him
He wasn't in a brooder at the store, he was just in a cardboard box in the back of the store that said 1.00. no lights on at all