The native form of your plant, Aronia arbutifolia, and the cultivar that you have, 'Brilliantissimo,' both will attract wildlife to your yard. According to the Natural Lands Trust plant list, Chokeberry Bushes attract Grouse, Chickadees, and other songbirds. Your berries will ripen later in the summer, so don't be concerned if the birds are not eating them right now.
Just to make sure that birds and other wildlife find the food they need, next time consider selecting the native form of the plant. Its fruit or seed is what wildlife have come to expect for hundreds of years. Migrating animals and birds depend on food being available as they move through a region, and many plants time their berry ripeness, for example, in time for that migration. The same can be said for hummingbird-attracting plants, many of which bloom when they are needed, at the time of migration. Cultivars of native plants (new plants created to have more color, berries, or other attributes) may disrupt that delicate web of life. So I always say, when in doubt, go native!