the reason smartys are used ,chocolate ,is an afrodeciact for sex ,smarty are the proper size to pop over the pigeons throat never found any difference with the colour they all worked 3 every night for a week normally does the trick
it does happen but cant remember the ins and outs of it think most fanciers will no doubt have a tale or two that can relate to the fact that a young robust cock bird has turned out to be a hen its a fact dunc ut happens
awhile ago was up at tammy s and he has first class racing hens ans hens that not only breed the goods but win also and not from any short race points but the long ones ,he will kill me for this but its the truth