I need some advise. I just added two little six week silkie mixes to my flockyesterday. They are very small and I thought that maybe I would leave my older silkie hen in with them while the rest of the flock went out to forage. The older hen went in her house and sat on her perch all day with her head hung down. She doesn't appear injured in any way.She is young and hasn't started laying yet .Would adding these babies cause a problem. She acted like she was sulking ????? I went out and checked on her and she is roosting in her house with her flock as usual this evening. I don't know what to think. Any thoughts ????