Looking at a property we're interested in buying, and saw this very mature berry tree.
I tasted half a berry, and it tastes & looks like currants.
However, the leaves aren't even close.
Leaves look like an invasive honeysuckle, but the berries don't really bunch.
Deadly nightshades have single berries, but I think they're black.
One thing to note.. the first picture is taken above me. It's not some small bush. I really thought it was a tree, but couldn't verify due to underbrush.
Location: Tri-State area, (IA, MN, WI)
Autum olive or huckleberry? Definitely not belladonna. If you think nightshade, from observation, it may be because huckleberry is a common name, but yet still a night shade. Red huckleberry tends to be from the NW, but you kinda match that climate.
we have tons of them here in MN. I've never seen one with bunching berries like you described, ours look very similar to yours.
Not a terrible plant, our chickens enjoy them for shade, birds and bugs like the flowers and berries.
On top of spaghetti all covered in cheese, there was this tiny ad: