Im showing a few birds in the local fair the end of this month but one of my roosters has mud stains in his tail! Ive washed them time and time again, but it is still an off-white, almost khaki color. HOW do I get them pure white again?! I was told to mix 1 part bleach with 5 parts water and wash his tail in it a few times, but can anyone back up this recipe or give me another? I do NOT want the bleach to eat away his feathers, he is my top bird but the rain we had a week ago was too much for a long tailed bantam. Any help is appreciated!!