So the ducklings that are here I am finding in the morning all huddled together underneath one of the ramps. Yesterday am, mom was about 1' away, but def not sitting on the d'lings. Today mom was quite some distance away. My overnight low temp was 51'F... NOAA says that should rise over the next week ahead, but only 54'F tonight. So I'm wondering. Since this is this way, should I be locking mom & babies inside at night?