Oh my gosh I am so sorry!!!
theres a low percentage that you will get another white from those hens over him as his color is recessive to theirs, so unless the browns carry white you won't get white. But crossing him to your tibetans you should expect some tuxedo chicks, which will have white on their chest (idealy the whole chest and belly would be white but not always). So that may be a good reminder of htem... tuxedos are gorgeous.

theres a low percentage that you will get another white from those hens over him as his color is recessive to theirs, so unless the browns carry white you won't get white. But crossing him to your tibetans you should expect some tuxedo chicks, which will have white on their chest (idealy the whole chest and belly would be white but not always). So that may be a good reminder of htem... tuxedos are gorgeous.