Is this Bird Cherry?

Trying to identify this bush. Grow in full sun, dry, clay/sandy soil. I am in Gravenhurst, ON (zone 4). Thank you.

Pin Cherry?

I have a few mystery trees or perhaps shrubs that has berries on it resembling pin cherries but before I go and pick I want to make sure I’m right and this isn’t something poisonous. Can someone let me know?…