PLATE XV 
DIAGRAMMATIC REPRESENTATION OF THE ECONOMIC STATUS OF 
SOME OF OUR COMMONER BIRDS 
Protection of trees and foliage: 1. Phoebe. 2. Vireo. 3. Warbler. 4. Chickadee. 
5. Nuthatch. 6. Downy woodpecker. 7. Flicker 
Aerial insect-destroyers: 8. Whippoorwill. 9. Swallows. 10. Kingbird. 11. Crows 
and Gulls 
Destroyers of noxious rodents: 12. Owl. 13. Hawk 
Destroyer of soil-infesting insects: 14. Robin 
Destroyers of weed seeds; 15, Chipping Sparrow and Juncos. 16. Goldfinch 
