I'm buying chicks today and I really just want about six or so total when they grow up. What are your experiences with Chick Deaths? Are they common? If so, why? Have you ever lost any chicks? I was reading a book and it said something about buying 25% more chicks than what you want to end up with as adults because some die and some you have to cull because of defects. I'm wondering if I should buy more than six..