I started off on a hatch on sat. The hatch was going great had lots of pips and everyone zipped out nicely. Till I started noticing problems. One chick came out with its neck hanging down I thought it just needed time to rest and dry. He couldn't stand and he had his head tucked under touching his belly and he would flip over and sometimes fall flat with his head tucked under and his legs stuck out infrount of him. by the next day he started to slowly get control of his head and now you cannot even tell him from the others. The next problem I got was a chick who couldn't even stand he was flat on his belly with one of his legs stuck out behind him he had movement in it and could push himself along. but just layed there sadly by the next morning this little one had passed on. Now 2 days later I am noticing it on another chick it started out as it head just hanging and not lifting it up and now he is doing the same as the 1st one head tucked under to his belly flipping. I have looked at all the chicks no deformed chicks no adnormal things. Heat ran 100.00 the whole hatch humidity was 45-50% the whole hatch till day 18 I turned it up to 65-70% Never opened the incubator after day 18. Temp never went up and down had the eggs in a egg turner the whole 18 days. Candled on day 3-5 again on day 10 and then on day 18. Only lost 6 eggs during incubator 4 never developed and two where early quitters. I have some pics of the 1st and 2nd chick I mentioned the pic of the 1st chick got worse then how it shows in this picture. PLZ HELP ME!