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Originally Posted by
emtdeb2001 
Ok all, I need help. I had some polish eggs in the incubator and they were coming along 2 pipped and one even zipped then the chicks died! Is it something I am doing wrong? I have hatched chicks from the roo before but not these hens. I was wondering if it was to much or to little moisture? Thanks for any advice
There are a large number of things that affect developing and hacthing embryos, as well as continue to affect the young birds for the first three weeks of life.
I would strongly suggest that you get a book called "A Guide to better hatching" this will cover everything from breeder bird selection, feed, health and care of the flock as well as incubation and hatching techniques.
The age of the breeder birds and health play a huge role, then the feed which affects the yolk protien, vitamin and mineral content, a pip and death has at least 10 possible causes. each stage of embryo death has several possible causes. This book covers all of it and it only costs $7. You can can also read on the Mississippi State University website that has a great number of poultry articles.