We got four Plymouth Rock chicks yesterday. A neighbor gave them to us. They weren't suppose to hatch, she thought the eggs were rotten under a broody hen. Anyhow, they hatched and are 6 days old now. Three seem to be doing great. One seems to be a little smaller than the rest and slower to respond. It does perk up and chirps loud when held. The eyes appear normal and breathing seems fine. We're currently mixing some electrolytes to add to their water. Any thoughts and suggestions would be appreciated. Thanks.