There are several beneficial shrubs that provide fruit for migrating (or summer nesting) species. Many of these shrubs have another benefit in that the spring flowers attract insects, which in turn attract insect-eating birds. The chart accessed through the link below provides brief information about selected shrubs considered beneficial to bird species. Included in the chart are flowering, and fruit producing times, and when the fruit is typically consumed by birds. They are native to the US, and most are native to Minnesota; suitable for use in Hardiness Zone 4.
Southwest Minnesota Birding Resources 