How long will it take for your parakeet to jump on your finger?

Usually about 24 hours. I open the cage door, wiggle it to make noise, and place my finger along the bottom of the opening. If he is ready to come out of the cage, he now jumps on my finger. The first 24 hours I allow the parakeet to spend a lot of time out of the cage and work with him. I keep placing my finger along the bottom of his belly and push up against his belly gently. If you do this enough times, he will catch on quickly. They usually love to sit on your shoulder after they get used to coming to your finger.