What can YOU do to help the birds? NJ Audubon provides a list of Ten Tips for Backyard Habitats. A backyard habitat reduces the amount of your lawn which provides absolutely NO benefit to wildlife (except for deer & geese). If you choose native plants and shrubs, not only will you provide food for the birds, you will help replenish the understory in our woods. An extremely helpful online state-by-state plant finder (listing natives and invasives) can be found at eNature, and the U.S. Department of Transportation provides a comprehensive NJ list.
Whatever you do, don't plant invasive barberry or burning bush... their seeds are also dispersed by birds but the plants choke out what little native understory plants the deer don't eat.