so I have a mama hen and chicks in the coop. I lost a chick today. It wasoutside and got cold and died. Is this normal that mama might lose a chick? I want to be hands off, but I also don't want to lose a bunch of chicks. Mama is a cuckoo maran, and she had 7 chicks. Shouldn't the chicks learn how to go up & down the ramp and stay with mama? Any other hints?