My 8 chicks were sent out of Meyer's this morning and are expecting to arrive on Wednesday, which means a total of two days or so in that box. It's expected to rain here until Wednesday and I'm very worried that the majority of my chicks won't make it. We DID however, buy a heating pad also which I was told would help. Almost half of my order consists of Polish which do poorly in bad weather. And I know rain and chicks don't mix well. Should I prepare myself for a high mortality rate? Anyone ever have this before?