While observing the birds WooFDriver captured what I believe to be a Red Elderberry Bush (Sambucus Racemosa L.). The Red Elderberry provides good food and cover for birds and other small animals. Hummingbirds also visit these plants to collect nectar from its flowers. It is of the Honeysuckle family growing from 10-20 feet tall.
USDA’s Webpage to learn more about this plant