There are shampoos for the white manes and tails and white fetlocks and legs, for horse shows and also shampoos for dogs with white feet for dog shows. They get some real stains! These products might help reduce stains. But as suggested "next year" get your show birds separated well ahead of time--(might have to get several more ready than you will actually show), as a lost tail feather can be more important than a minor stain on white feathers! Good luck, and do the best you can. CJR