Chris, I've never taken any birds to shows that are back to back but I imagine if I did I would bathe them again as my birds are free ranging and I don't have the facilities to keep them in nice pens until show time. That being said, given that I typically take about 15-25 birds to a show, it takes me a good 4-6 months to get up the gumption to even want to wash a bunch of birds to take to another show! Just the thought of it now is depressing.
God Bless,
God Bless,