We went ahead and put our 6 week old ducks outside cause it turned 80 dgs. all week then we got a cold snap to about mid 30's at night. They seem ok even at nite. 1 of them died cause it wouldnt come out of its warm little hut to eat or drink and i was inexperienced and didnt even think bout that They have food and water in their hut now. I was wandering if someone with experience could tell me if its ok to give ducks lukewarm water if its cold outside?