Thanks hennible (love the name btw lol) ......I was concerned more so for one of my ducks I have recently rescued who couldn't even walk due to neglect!! She is walking and swimming now, still a little wobbly at times but doing exceptionally well in just over a week since I rescued them. I know they are having good food, plenty of water and TLC but wanted to make sure I do whatever I can to keep them warm at night.