Sorry, but I had not seen your thread for several days. It sounds to me like these chicks were very stressed in transit to you. Did you get them in the mail? Chicks that are lost in the first week to 10 days, usually are weak to begin with. If you have given them heat, fresh water and food, treated for any pasty butt, I would think they suffered shipping stress or a poor hatch.
Make sure that your bedding is fresh, dry, and there are no spills that could cause mold. Good air circulation without direct drafts is best. Are you raising the chicks outside in a coop, and what has the nighttime temperatures been? Make sure that your heat lamp is for chickens, since some heat lamps have a Teflon coating, and can cause toxic fumes. I’m very sorry for your loss, and hope that the rest survive.
Make sure that your bedding is fresh, dry, and there are no spills that could cause mold. Good air circulation without direct drafts is best. Are you raising the chicks outside in a coop, and what has the nighttime temperatures been? Make sure that your heat lamp is for chickens, since some heat lamps have a Teflon coating, and can cause toxic fumes. I’m very sorry for your loss, and hope that the rest survive.