Serviceberry (Amelanchier arborea) is a tall shrub or small tree, usually 15-25 ft. Its white flowers occur in drooping clusters before the leaves have emerged. The flowers occur at the same time in the spring that shad travel upriver to spawn.
 
Young leaves are covered with soft, woolly hairs that disappear as the leaf matures. The plant’s ornamental bark is gray and smooth but streaked with fissures; often with a reddish cast. The deciduous leaves of downy service-berry may turn wine-red in fall.
 
The small, edible berries ripen to a deep purple/blue, but it’s hard to find them completely ripe in the wild (before birds such as cedar waxwings eat them). You can pick them while they still have a bit of pink on them.