I have two quail. I've only had them a few months. Over the past week or two, I've noticed that one of them flutters (shivers?) her wings a lot. I doubt she's cold because they're indoors and it's ~64 degrees F. Plus, I've never seen the other one do this. She hasn't always exhibited this behavior. She's still active and vocal. There are a lot of normal stools in the cage, however, occasionally they make liquidy stool. Is this a normal behavior or do I need to see a vet? Has anyone experienced this?