PROBLEM I. The Kinds of An'miah of the Earth 3<^ 



14. List some of the scratching birds. What do they eat? 



15. List some wading birds. What are their characteristics? How do 

 swimming birds differ from wading birds? 



16. Which is the largest hving bird? What are its peculiarities? 



17. About how many species of perching birds are there? What is the 

 importance of these birds to man? 



18. What can vou tell about bird migration as to: when birds migrate, 

 in which direction birds migrate in the various seasons, and how 

 far birds fly during migration. What problems in regard to migration 

 are still unsolved? 



19. Explain how birds can fly. List three characteristics which enable 

 birds to fly. How does soaring differ from flying? 



20. B\' which characteristics do you recognize reptiles? When an animal 

 is called cold-blooded, what really is meant? Where are reptiles most 

 common? Define hibernation. Into what three main groups (orders) 

 are they divided? 



21. What are the four kinds of poisonous snakes found in this country? 

 Tell some facts about each of them. 



22. State the peculiarities of structure in snakes. Explain how they carry 

 on locomotion and how they feed. 



23. Tell something about the important snakes of other countries. 



24. Describe how lizards resemble and diff^er from snakes. Which is the 

 only poisonous lizard in our country? 



25. Why may alligators and crocodiles be dangerous to man? 



26. Why are turtles called reptiles? What do they use as food and how 

 are they fitted for getting this food? Of what importance are they 

 to man? 



27. What are the striking characteristics of amphibians? 



28. Into what two groups (orders) are amphibians divided? Give an ex- 

 ample of each order. Compare the tailed amphibians with lizards. 



29. Discuss the habits of frogs and toads. Of what importance are toads 

 to man? 



30. State how you distinguish fish from other vertebrates. How do gills 

 differ from lungs? 



31. How do sharks differ from true fish? 



32. How numerous are fish as compared to land living vertebrates? How 

 do fish vary in size and appearance? 



33. Describe the migration of eels and salmon. 



Exercises 



Mammals 

 I. Collect pictures of mammals and group them according to order 

 on charts or in a looseleaf notebook. 



