Quick question! I have 2 Pekins about 7 weeks and a couple days old. I finished their outdoor house/run. The lowest night time temp this week is in the lower 40s. Are they ready for that yet?? They look fully feathered to me but these are my first ducks so I could be wrong.
I would wait. The general rule of thumb is 90F the first week, dropping by 5F each week. 90 - 5x7 is 90 - 35, which is 55. Not saying they would not survive, but I feel that they are using so much energy growing right now that I would not want them to have to spend extra energy keeping warm.