The baby chick is reunited with the two mother hens and the two other chicks, and they all accepted her perfectly fine...This morning, she's running around, peeping and foraging with the two others, even though she's a little smaller and slower than them because they hatched a few days before her. I will post pics later, as soon as I go through my uploads and individually delete each photo because it's full right now and there's no "delete multiple" option.