We have 4 7 week old chicks, a gold laced wyandotte, a black orpington, a new hampshire red and a white one that I can't remember the breed. The gold laced wyandotte, Dumplings, has started going off by herself and sleeps standing up. She is not nesting down and sleeping all cuddling up together like the others. I let them loose today while I worked on their new coop and she just goes off by herself while all the others are chasing each other trying to stick together. She feels kinda warm when I pick her up and the others really don't feel that way. Any ideas?