My hen hatched out 5 chicks a bit over a month ago. They have all seemed fine until yesterday. We lost one and another werent looking so great last night. I just went to check on them and thought one was dead so I got somthing to put her in but I came back and she had moved a little and was standing. She wont open her eyes, and will barely respond to me touching her. I cant get her to eat or drink. We put the heat lamp in last night in case the mother maybe wasnt keeping them warm anymore. Any advice?