My kids were just playing with our 4 week old chicks outside. My 4 year old was being too rambunctious with the chicks so we were bringing them into their indoor pen. One of the little Wyandottes just laid down with her eyes closed and had her beak out. She wouldn't stand until I picked her up. She's usually pretty skiddish and didn't seem to care that I was holding her. She wouldn't eat or drink at all. She did poop and it looked normal, no clogged vent, crop seems normal, etc.
Could this be stress? She is looking better, running around, etc. Acting a bit more like herself about 30 mins later. I have her quarantined and she keep trying to escape back to her flock. Should I be worried about anything else? Resp. illness? Cocci??