I like having a nice foofy bedding for the ducks, partly because I like to spoil them rotten
In fact, my philosophy is that happy, loved ducks will be healthier for the most part. One standard I hold myself to is that if I would spend the night sleeping in their pen on a blanket, it is good enough. So I keep the bedding thick enough for me to be comfortable. Note: I am comfortable sleeping on a blanket on the floor, so the bedding is not that thick. A few inches.
Okay, yes, they can get arthritis, and I have read it can be at least partly caused by infections of the foot, so you don't want to delay dealing with bumblefoot, which is, in my way of thinking, very bad infected acne of the foot. When ducks get bumbles (you may know this already) they are filled with pus which is more like chunks, not liquid. And with duck feet, cutting them is a last resort, in my opinion. Well that was a departure. What I am saying is, keep an eye on his feet, check them regularly, don't wait till he limps (do as I say, not as I do
), and when you catch it early, it is easily treatable with Epsom salts compresses and either topical antibiotic or clear iodine. Then you further reduce the risk of arthritis.
In the winter, I keep a few nice cushy straw-covered places for the ducks to get off the cold ground during the day, then at night they are kept above 40F on a few inches of shavings in their night pen.
Check your security regularly, too, I do that. Predators show up out of nowhere and they go to great lengths to get at ducks. Incredible, the stories I have read, and sad events I know of right around here. It has really affected me . . . I get a little worked up about security. And there are no 100% guarantees, I understand that, we make mistakes. But I want to put a word in for you to keep that baby safe.