The leg band is used for ID purposes and is just a little plastic band, you will enter the number on the entry form as well as whether a cockerel, a male under a year old. A cock, a male over a year old. A pullet, a female under a year old. Or a hen, a female over a year old. The bird will also have to have a NPIP cert. What I would reccomend is that you attend some shows and mingle with the exhibitors and ask questions before showing yourself. Remember that at a show as in here you have poultry in common with everyone there so don't be shy!