Causing Shrub Pattern Baldness?

Outside my favorite birdwatching window is a shrub that I’ve never been able to identify. Birds love to eat the purple berries that appear on it in the summer. Lately I’ve noticed Goldfinches and House Finches sitting on its branches eating the buds. Will it send up new buds in the spring, or will my shrub have big bald spots next summer? I guess I’ll find out.