hi, i'm new to this forum, although i've been reading backyard chickens for several years. i'm hoping someone can help me with my egg hatching problem. i have a wonderful broody hen who has raised several clutches of chicks for me. usually i just buy day old chicks and put them under her in the middle of the night and she is a happy mama the next morning. this time i chose to let her incubate some of our eggs. 3 chicks hatched just fine on day 21. 3 more got part way out of the shells and then died. i did a bit of searching online and found that low humidity was the probable culprit. i have been using mini flakes for bedding and i'm wondering if the drying ability of the chips could be the problem. any ideas or suggestions? thanks so much.