I went out to feed and water my chicks this morning. One hen was just standing in the doorway. I went to move her she remained there. I picker her up with no trouble and set her on the perch. She is extending her neck and opening her beak. She repeats this every few seconds. There is also a slight hiss when she opens her beak. She let me handle her easily. I check her feathers and found nothing. She even let me pick up her wings very easily. Not normal. Its the beathing weird that I'm concerned about. This just started this morning. Also when she breaths weird her bottom is clenthing. At first I thought she was going to drop an egg right there. I watched her for about 15 minutes. Someone help!!! What's wrong with my girl???