Ya know I just got the new issue of Practical Poultry and it has an article on why chicks die in the shell. My point being the position of the chick in the shell. Which is what the article addresses. In the case of the chick I posted about earlier here, there may have been some oxygen problem. It did have a hard time getting the shell off it's head. The airspace is very important. A oxygen deprived chick will of course have problems just like an infant, I would expect. Anyhow here I am again recommending Poulty mags. They have a new Hobby Farms mag I bought that's dedicated to chickens.