I use Canadian peas. Also, like they said above, handle the young everyday, even if it is only for a minute. I take each one out of the nest and let it perch on my hand (Of course you will get the occasional poop, but that comes with the territory.) and talk to it.
The biggest mistake a new person (Or even an old person) can make when trying to tame older birds is getting frustrated. I have some older birds who were quite wild. I ought them from a guy who raises them for food. I started with holding seed in my hand. When they would not come to my hand, I put the seed in the feeder and stayed inside the coop. I had to back away, but they eventually went to the seed. They ate the peas first, then the milo, etc...
Each day I would put the regular seed in the feeder, but hold the peas in my hand, staying close to the feeder. Eventually, one of the adult birds figured out if he was going to get the peas, he had to come to me. (I never put peas in the feeder.) Then another one would come, then another. They are still very leery about being handled, but it is a work i progress.
The youngsters will come right up to me with no hesitation. I can pick them up, handle them at will.
So practice patience. They will come around.
