I sold some chicks to a fellow who took them to their new home 3 hours away. He put them in a rubbermaid with a heat lamp and food, I don't believe they had water. The rubbermaid had a separator between it because he bought 12, 3 day old mixed breed layers and 12, 7 day old Australorps and he wanted to keep them separate. They were in the back seat of his truck. He just informed me that 11 out of the 12 mixed breed layers died before they arrived. The Australorps were fine. The only thing I think that wasn't good was he had his dog perched up on a pillow looking down at them. Could this have anything to do with? Could the dog have scared them? Or were the mixed breed chicks to young to send? Just wondering if anyone has any suggestions?