Last night at lock up, one of my three hens was missing. She started laying 10 days ago and both the roos REALLY like her. My daughter had seen her in some bushes away from the others, just before sunset. My son and I went looking for her (by then with a flashlight!) which was unfortunately, kind of pointless. She stayed hidden. I fed lots of good snacks before work this morning, and it's a decent temp today, with frigid temps coming back again tonight. She was not around when I came home at noon. I have the coop open, and the others are doing their thing -- none have ever left what we consider our yard. Excluding a predator encounter,, how likely is it that she'll show back up? And now, before it freezes again, would be smart!