Hey I have read a few threads on this but have not read anything in regards to if the pools are semi - iced over. Not frozen but I'm nervous about letting my ducks out of their pen just in case they want to go to the pools. I have both plastic pools one i put in ground and one above ground. Today its 30 degrees but the pools have some ice in them today. Is it safe for the ducks? Do they know its too cold to go into the pools? Any help would be great. This is my first winter with ducks.