Not terribly new but new-to-me; the Audubon Society has launched a database of native plants for birds. “Birds and plants that are native to an area have evolved together and often have these mutually beneficial connections. Non-native plant species do not have these connections to native birds and can create ‘food deserts’ for our birds. This is a problem in the United States, where many common landscaping plants are not native to the country. In the fall of 2016 Audubon launched our Plants for Birds programme, which encourages and empowers people in the US to support birds by planting native species whenever possible.” The splash page for this resource shows a form for providing e-mail and a search box for zip code; you apparently do not need to provide your e-mail address to search. I was impressed with the number of resources I got for my search! Please note this is for the United States only.