Hey all, I'm brand new to raising Coturnix quails. I've had 4 females and 1 male for about two weeks now. Today, I noticed a couple things that concerned me. Their throats have been throbbing/trembling all morning. Here's a video of the male quail doing it. Does anyone know if there's anything I can do to treat it? If it's a sign of a disease, deficiency, or stress? It only started happening today. Also -- if anyone knows anything about the missing neck feathers, if they're related to the neck trembling or if they're an unrelated sign of molting, bullying, deficiency, or stress, any info would be much appreciated. (It could be an attack from an aggressive female that I already separated from the main pen, though I'm not sure because I've never seen it peck at the neck.) Thanks a bunch!