Listen to Douglas Tallamy , an American entomologist, ecologist and conservationist, and professor in the Department of Entomology and Wildlife Ecology at the University of Delaware, discuss how Native Gardens can save our birds.  Did you know 95% of songbirds only feed their young caterpillars and larvae? These insects can generally only survive on native plants.   He has written and co-authored several books as well as papers, including "Bringing Nature Home" and "Nature's Best Hope".