I have stinky ducks that don't bathe. The stinkiest is my previously psychotic muscovy drake, O Pato, who has been a sweetheart this year. I only saw him voluntarily get in the pool and bath once in 2002. I hose him down when he is ripe. I haven't seen him in the pool once this year. Today, I could hear him beating his wings. I went to see and he was dipping his head in the pool, flicking a minutia of water onto his back and thne beating his wings and dipping his body to the ground. I decided he should go into the pool and so picked him up and held him in the pool while he beat his wings [and kicked a bit!] He got straight out when I let him go, and didn't return and bath properly.
Next stinky boy is O Pato's pekin drake side-kick, Ping [aka Pingy Pingy]. Pingy actually loves water, but he is so bonded to O Pato that he rarely gets near the pool for long enough to get in and bathe. I plunged him into the water next and ensured his undercarriage had a good rub down in the water -- he is special needs and cannot reach his undercarriage and his vent area to wash, so Mama has to clean him. He often stays in the pool after I have washed him and has a good bath. Not today. He was out like a shot and over to O Pato, who was staying out of arm's reach.
Third stinky boy is Butter who voluntarily washes about once a month -- even in icy cold weather. This boy doesn't like rain, which we have had a lot of this year, and goes back into the shed and sulks in there when it is raining. By comparison with the first two, he wasn't yet ripe, so I let him be.
The "cleanest" of my boys is Daffy. Those of you with Pekins that live in water all day will not understand this, but Daffy bathes about every 2 weeks. He has a very long splashy bath when he gets in but that isn't "frequent". I let him sit on my arm today and he didn't smell too bad so I let him be.
I also have a beagle who hates water. Did I do something wrong in a previous life? None of my pets like bathing. My husband insisted on bathing the beagle this morning, to her disgust. Photo from when husband bathed her only 2 weeks ago. Husband is a clean freak