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?…

chokecherries

are these chokecherries, or some other type of bush? growing on an island in Georgian bay. thx v. much.…