I have a 21 week old New Hampshire Red that isn't quite right. She pecks if the pullets/hens are pecking next to her but when she's on her own she can't seem to find food. If I throw something towards her she freaks out and flies away. When i open the coop in the morning the other ladies run out to free range and she paces until I go in and stand behind her to chase her out. She's run into the post, a wall, kids toys, etc. I've seen her do somersaults off the perch in the morning and nose dives on the way back to the coop. She JUST started to lay a few days ago and they are shell-less. When the others lock up at night she gets back in the bushes and has to be chased out. What is going on with her?