Yes they do! During the summer when we hit the 90's our Duckies went to their platform voluntarily to drink and get out of the sun. But they also hate frost but mainly because their pool and their water freezes.Moving them from outside to inside may confuse them too. I only bring my ducks in if they are injured or it’s under 0 degrees. If it’s in the 40s where you’re at then they’ll be fine. My ducks like 40 degree weather better then 90 out