I had six chicks, 1 Maran, 1 Barred Rock, 1 Americauna and 3 Silkies. I got the first 3 from one breeder and the other 3 from another, all six at 2 weeks. I had the for a week with no incident but the 3 Silkies have all died suddenly in the last two days. Almost no symptoms. They were eating, pooping and drinking up until several hours before they died. Then they lie down and breathe heavily and die within several hours. One of the Silkies was pasting up several days before she died but that seemed over. They also were not growing nearly as fast as the other three and were getting pushed around (but not pecked). Temperature is good, pine bedding, lots of water and chick starter. I did feed them a small amount of hard boiled egg as a treat but I heard that that should be fine. Is it possible that they died from being pushed around or does it sound like a disease? Could the three from one breeder have caught something from the other breeder? I am so worried that the other three will catch this!