My last hatched was very sad all of my 4 chick found die drowned may be coz high humidity.....Previously my humidity was 60-65% during 1-18 days... and 80-85% in the last 3 days.. On day 16 during candling all my chicks was moving and seems fine. But when i candled it on day 17 ,, none of them was moving but yeah i can saw veins and air sac completely.. On day 21 when i had not found any movement and rocking.. I opened all and found them drowned dead inside egg... almost 80% of my chicks was ready but later they drowned and die. I don't know why. What can be the reason of die please suggest?? I am setting up 10 no's of brown egg of Light Laced Indian Hen.. Who wanna join me... This time as suggested by backyardschickens.com website I maintain 50-55% humidity in the first 18 days and 70-80% during last 3 days. May be this time god will help me out for successfully hatch. Please suggest correct humidity level.. in some websites i found 1-18 days 60-65% and some other sites say 50-50% etc etc.. ??