Is it true that you can count on losing about 10 percent of your flock in the first few weeks of life? I am so stoked that all 100 made it alive thru the mail and we still have all 100 after the first 24 hours...I dont want to get too excited yet, but they all look SO good, only 1 poopy butt (mild at that) in the entire bunch and no other signs of illness or distress. So really, what is a realistic number to be prepared to lose in mail order chicks?