So how does one get their water hating parrot showered or bathed? It's all in the iteration introductions!
I'm the first to say that bathing/showering/misting in our house has been a long slog to find who likes what and who will at the very least tolerate what. Felix WAS interested in showers, and then one day, not so much. Now when dad is showering him you can hear the screeches of apocalyptic protest throughout the zip code. A year later Felix is taking multiple baths in his water bowls rather than remain in the hands of dad in a shower. I suppose that's a Grey's way of working around the details.
The Horde love an outdoor misting. Stella, matriarch to the Horde, loves floating in a sink full of warm water just deep enough to lift her toes off the sink bottom.
Kirby is a Serial Water Bowl Bather. EVERY birdy's water bowls are used by the end of the day exluding his own.
Snickers and Butters have to shower together and prefer to shower with dad. They are all in and all happy and completely soaked when done.
So why the disconnect? Why the change of heart? Why some and not all? Who knows! Why I have 2 children who grew up to be totally different humans is also a question I toy with at times. Getting a water phobic, or H2O challenged parrot interested in water takes time, and lots of iterations and suggestions and variable options offered. The end game to success is THEY picked the water. Felix is currently assisting in dish washing and fake dish washing. He's all of a sudden REALLY interested in watching that water spigot. I let him watch, I let him touch the sink sides, the spout, the handles the sprayer...he's considering his options. I have to let him. Knowing Felix this could take a while.
Iteration introduction is you purposely offering an option to water. A bowl with warm water, a bowl with cool water, a bowl with temperate water with floating fruit bits. (They need a reason to look sometimes). Buy a plant mister and use it with your parrot as an assistant close by. If you have multiple parrots, let the observer see a mist lover in action. You like baths? Let your parrot watch that play out from filling the tub to drying off. Give him a perching area close enough for viewing, far enough to show him he will NOT be participating.
As you iterate through options and scenarios, watch for body language and vocalizations that are an open invite for more time or information on the matter. Let your parrot take you to his promised land of water park fun. You may have to always include floating fruit, you may always have to have a hand towel laid out to feel secure. Keep what works, get rid of what fails and it will all add up to your parrot's first mist, bath or shower being his ritual. Stella watched me wash dishes for a year before she just jumped in the sink one day.
I'm kinda seeing that coming with Felix. He sure loves making gurgling sounds when I'm doing dishes. And when a CAG or TAG starts matching sounds...you know they like what they see.