i<Si6 TiiK Cornell Reading-Courses 



(In answering questions, attach additional paper if needed and number 

 the ansivers.) 



I. Name three ways in which birds are beneficial to agriculture. Which 

 is most important in your locality? Why? 



2. Name three ways In which birds are detrimental to agriculture. 

 Which is commonest in your locality? Why? 



3. Which of the hawks and owls are beneficial and which are detri- 

 mental, and how can the various species be distinguished? 



4. Are the following birds beneficial or detrimental in your locality, 

 and why: crow, red-winged blackbird, crow blackbird, robin, waxwing 

 (cherry bird), bobolink, oriole, red-headed woodpecker, house sparrow? 



