4 2 4 



ZOOLOGY. 



For further description of the numerous interesting- families 

 of Passeres the student must refer to some special book on 

 birds. The study of their habits and form constitutes one of 

 the most popular and entertaining subjects of natural history 

 for the recreation studies of busy people. Much good, and 

 some very indifferent, literature intended for guidance in such 

 studies is now being produced. 



FIG. 228. 



FIG. 228. The Meadow Lark. From U. S. Dept. Agriculture Year-book, 1895. 



433. Special Topics for Investigation in Field and Library. 



1. Enumerate the special structural features which seem to fit birds for 

 successful flight. Compare different birds as to these features? What are 

 the different modes of flight? Compare the flight of the buzzard, the 

 wood-pecker, the quail. What is the action of the wings in flying? Of 

 the tail? What is the effect of clipping one wing? Why? The rate of 

 flight in different species of birds. 



2. Study the group of birds from the point of view of their social 

 and gregarious instincts. Are any solitary? Do any have varying social 

 habits during different seasons? 



3. Make a general study of the migrations of birds, collecting the facts 

 as to range, time, supposed causes, the effects on the species and its 



