i went to get some leg rings the other week to put on some unrelated birds ive hatched iworths and light sussex so i could tell who was who when i breed or sell some... rings £9 for a pack of about 30, scandalous they are only coiled plastic, so i got some sheep spray dye £3 a big aerosol can.. many colours i got blue, sprayed the unrelated light sussex cockeral i want to keep, and the growing unrelated ixworths, it rained hard soon after spraying but 2 weeks on all still blue... it lasts on sheep so i tried the hens, might need doing again when they moult but works ok.... some leg rings ive used before have come of.