Native trees, shrubs provide more food for birds

Source: Science Daily

Plant native trees and shrubs in your yard, and you can really help songbirds. In a study of the Carolina chickadee in the metropolitan DC area, researchers found that native trees and shrubs support much more ‘bird food’ — caterpillars — than non-natives do.

https://www.sciencedaily.com/releases/2017/10/171031084841.htm