With the chick looking like that, Corid (amprollium) is a good first step. The dosage is 2 tsp of the liquid, or 1.5 tsp of the powder in each gallon of water. It usually is best to treat all birds together and safe. The puffed chick should also get a drench of undiluted Corid 0.1 ml per pound twice a day for a couple of days. If using the powder, dissolve 1.5 tsp in 2 tsp of water, which is equal to the undiluted liquid Corid.
