Nice and buggy, so lots of food. Small-medium ornamental tree that usually grows at an angle instead of straight up. You have to search for this one - not offered by many nurseries. The fruits of this weedy native small tree are loved by birds, as you can tell by all the seedlings that sprout in your yard. Also the host plant for several species of butterfly.
Every yard needs an oak tree.
Many different species of caterpillars feed on oaks, so there's plenty of food for birds. B,N,Y Vaccinium spp. - Blueberry. B,N,Y Viburnum spp. The fruits are gobbled up by birds soon after they appear. You won't find this at a nursery, but any other native Viburnum should be good, too.