They're very good about preening and cleaning themselves and drying off, plus I bring them back to a blanket on the couch with me afterwards. They are like little space heaters, lol...if they sit in my seat for even a few minutes I can sit down and feel so much warmth where they were.
So you've heard other ducks make a wheezing noise when they're resting too? I never have, I don't think...I've heard sneezing, coughing (when they eat too much dry food without taking a drink of water), and honking, but never this whistling, wheezy noise. I'm watching him right now and I'm wondering if it has to do with the way his head is turned. When Louie got big, he always turned his head and tucked his beak under his wing to sleep, but this little guy is just relaxing his neck and letting his beak sit on his (big fat) chest. I'll have to watch and see if he makes that noise when he tucks his head back (assuming I can catch him doing that).
I'm still amazed you were able to get these little ducks..