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They are in the prunus genus, but not choke cherries. Lots of domestic cherries and ornamental laurels get planted by birds, so you have a variety of prunus sports that come up. There is a native cherry called "bitter cherry" Prunus emarginata that might be a match, but hard to tell by the photos. Bears love them all.
Definetly chokecherries
Use the camera function on your phone. Bring the photo up then do a google search. Seems to be pretty accurate. But maybe it's just easier to rely on others.