Yet another plant I had difficulty identifying. It seems that a lot of plants in NY State bear red berries, and they all look more or less the same to me.

My best guess is that this is Aronia arbutifolia, or Red Chokeberry described by the Missouri Botanical Garden as:

Aronia arbutifolia, commonly called red chokeberry, is a deciduous, multi-stemmed shrub that is native to both wet and dry thickets in Eastern North America (Nova Scotia and Ontario to Ohio south to Texas and Florida). It typically grows in a vase-shaped form to 6-10’ tall and to 3-6′ wide, but tends to sucker and form colonies. Clusters (corymbs) of white to light pink, 5-petaled flowers (1/3”diameter) appear in spring. Flowers are followed by abundant glossy red fruits (1/4” diameter) which appear in dense clusters along the branches. Fruits ripen in late summer and persist on the shrub throughout fall and well into winter. Elliptic to oblong to obovate leaves (to 3 1/2” long) are glossy dark green above and pubescent grayish-green beneath. Foliage turns bright red in autumn and compares favorably with burning bush (Euonymus alatus) for excellence of fall color. Fruits are sometimes used to make tasty jams and jellies. Aronia arbutifolia is synonymous with Pyrus arbutifolis and Photinia pyrifolia.

Genus name comes from the Greek word aria the name for a species of Sorbus of which the fruits resemble chokeberry.

Specific epithet means having leaves like Arbutus.

Common name is in reference to the tart and bitter berries which are technically edible but are so astringent as to cause choking in those who try.