This is interesting. BTW I've read the the incubator rooms at commercial hatcheries have an average temperature of 85-95 degrees. Those machines really heat up the small room around them because they have to let a certain amount of air in and out so the ducks wont suffocate. Also the farm featured was Metzer Farms in Gonzales California. I thought it was interesting that they used pipes with water nipples for their ducks. I always thought those are only good for chickens. I really understand why they use them. Water is short and expensive where they are at. Even the farmers around there use recycled sewage water. I used to live in that area, but never went to Metzer Farms. Well back then I did not have the land to own ducks, and we did no own the house either.