I have 4 ducklings, all just over 3 weeks old. I was wondering when they could start living in their outdoor duck house ( they hang out outside during the day already). The weather in Vermont right now is about 80-90 degrees during the day -oddly warm - and 50-60 degrees at night. They all have started getting their feathers in. I have heard a lot of conflicting info for when to put them outside for the night, so any advice is greatly appreciated! Thanks in advance!