egg bound ? or killing chucks with kindness.

We have had the same problem as many of you,  thinking that our chucks were egg bound, and after loosing two of our three hens, we consulted someone in the know, A well respected allotment holder, who has kept fowl all his life. his wisdom (although upsetting) after describing the symptons, he asked how often do you give them bread?
alike all of us, (we, thinking were doing the right thing, overfeeding them) his simple solution was, (if we wanted to keep our last chuck was this) NO MORE BREAD(What happens when you have bread with a hot bowl of soup? it expands in youre stomach, just as it does for chucks when they drink water).