(University of Delaware) 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 from the University of Delaware and the Smithsonian Migratory Bird Center found that native trees and shrubs support much more 'bird food' -- caterpillars -- than non-natives do.
from EurekAlert! - Social and Behavioral Science http://ift.tt/2igM7N7
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