Many of this type of plant has 5 leaflets. As I said I am not able to identify every plant which was gift from the birds. These plants often hybridize - who can keep up with all that? Not me; I just enjoy the berries, happy that the birds leave some for me, and cut back the plants when they get overgrown.
Thanks for the name Himalayan black berry as one possibility. There is a report of this invasive plant in Gordon County, northern Georgia 323 miles north of my location.
