I was wondering if someone who does this often could fill me in on the how to's of mailing birds? I am trying to decide if this is going to be worthwhile and relatively safe to do for some chicks I have for sale. What are some of the pitfalls and special tricks of the trade? How do you keep them warm, fed and watered??? WHat is the best way to do this, it seems that expense isn't really an issue for the buyer... how many per box and how big... any advice would be greatly appreciated.