I purchased 30 chicks from a hatchery. RiR Black star Jersey giant Brown leghorn Buff Orpington I received 36 chicks and the six extra are a breed I ain't figured out yet. They don't seem to be doing very good. 3 of them have been gasping for air and than die??? I had 2 RiR chicks do it and 1 brown leghorn chick do it. Is there something I can do to help??