Trees, Shrubs and Conifers: Pruning a Serviceberry, 2 by Chillybean

Chillybean wrote:
We bought this in May to replace the lilac. The height is about 6 feet tall. We are planting for birds and other wildlife. The lilac didn't do much for attracting bugs, but it made a good bird holder. :) I didn't care for the smell of the flowers, so I am glad it was cut down before it could bloom again.

My hopes is to have this thing fill out similar to the lilac to provide a place for the birds and to have a branch or two strong enough to hold a couple of feeders. We've never really pruned anything with the goal of "training", just to get branches away from people who didn't like running into them when they mowed. What would be the best way to prune this so it can fill out? And when would be the best time to prune?

Thank you for any advice.