We created our run today and added the chickens and ducks. The chicks can be locked up in the coop at night, but the ducks have a dog house that doesn't have a door to close (just plastic covering to keep out wind/rain). We put them in, but they run right back out as soon as we leave. It's now almost midnight and they are still out there quacking around and having a good ol'e time with the mud pit they created. Do you ducks actually sleep in an open bed, or do they sleep right on the ground in the pen? I'm being a nervous-nelly mom and worried that it might be too chilly for them (50 degrees overnight), since this is the first time they are outside. Here they are before they decided to leave the duck house (again) - notice the nice mud bath?