I recently bought 6 chicks from Tractor Supply and I have them indoors in a tub with a heat lamp and shredded newspaper for bedding. One of my chicks recently started to have raspy breathing and sneezes a lot, but this is the only chick that is doing this. I clean their tub and put fresh shredded newspaper in daily. Will this clear up on its own or do I need to add something to it's diet to help it out? And is there anything I should do with their living conditions?