Just a couple of things. A three year old bird may not even have inch long spurs. I know spurs are an indicator of age, but it's not a guarantee. I've killed 3 yr. olds with inch long spurs or less. I've also killed a couple of jakes with a full fan. They were definately jakes. Both had about 3 inch beards with nubs for spurs and weighed around 14 pounds. As for what is a good bird, that would be any bird you call in. I'll take a 2yr. old just as quick as I will an older bird and be perfectly happy. Most of the birds I take on my property are 3 yr. olds, but if a 2 yr. old comes by, he is not getting a pass. Jakes will get a pass from me.