I bought 6 chicks a week ago. 3 have died so far. I called the hatchery to find out if anyone else has reported any sicknesses and they told me none have been reported. They are going to give me 4 of the breed that have died. The problem is I have to wait 2 weeks to get the replacements. What problems do you think I will encounter. I don't know how to treat the sickness if there is any and what to expect. Any thoughts?