PLATE XV 



DIAGRAMMATIC REPRESENTATION OF THE ECONOMIC STATUS OP 

 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 



