We got four Barred Rock hens about a month or two ago and then one them, Zoe, disappeared. This was on November 17th. But then, yesterday, she returned. She was undersized to begin with, but now she's even smaller and quite scrawny, which, of course, is to be expected. But that's not why I'm making this topic. You see, she has developed an odd habit. It doesn't worry me, though. I think it's actually kind of amusing and cute. But anyways. Zoe often looks around at everything, then suddenly runs around in jagged circles or dashes in a zigzag pattern, then stops, looks around a bit more, and returns to whatever she was doing. My dad says since she spent almost a month on her own, this is probably just something she learned to do to look out for predators. Is that the case?