BIRD-PROTECTION IN THE SCHOOLS 309 



Problems. 



Why is it desirable to have birds around the yard and 



garden? 



Which is the most interesting bird? 

 How may each of these birds be identified? 

 In what ways is the wren (or other bird) useful? 

 What may be done to increase the number of birds 



around our homes? 



How can we identify birds from their songs? 

 Through what changes in plumage does a rose-breasted 



grosbeak pass from the time it is first hatched till it 



is two years old. 



EIGHTH GRADE 

 Spring 



1. Special study of birds of the woods, such as warblers, 

 thrushes, woodpeckers, and vireos. 



2. Economic value of birds to the forests in destroying in- 

 jurious insects; value elsewhere in destroying weed seeds 

 and rodent pests. 



3. Bird-enemies; natural enemies, cat, man as an enemy. 



4. Work of the National Government to protect birds. 



5. Adaptations shown in bill, feet, wings, and tail. 

 Problems. 



In what ways are birds useful to the forest? 



In what other ways are birds useful? 



Which is greater, the good or harm that birds do? 



Are all of our birds worthy of protection? 



How may we identify the different species of the follow- 

 ing families; warblers, vireos, woodpeckers, thrushes? 



What interesting habits of these birds may we study 

 this spring? 



Which have done more harm to the birds, man or the 

 birds' natural enemies? 



What is the National Government doing to protect 

 birds? (See page 315.) 



How can we help in the work of protecting birds? 



How do the water-birds differ from the land-birds in the 

 structure and use of their feet, bill, wings, and tail? 



