80 SUBJECTIVE LESSONS. 



strate his theory ? Mention one of the best arguments f o 

 the value of protective coloration. Give illustrations 

 What birds illustrate the value of deceptive coloring 

 What are recognition or signalling colors ? Give illustrs 

 tions. 



Color and Sex (Chapter III, pages 45-47). The pup: 

 should learn the Synopsis of Secondary Sexual Charac 

 ters, and give one or more illustrations of each kind c 

 sexual difference mentioned. Explain and illustrate Da] 

 win's theory of sexual selection. How does the theory c 

 Wallace differ from that of Darwin ? 



THE MIGRATION OF BIRDS. 



Extent of Migration (Chapter IV, page 49). Upo 

 what is the extent of migration often dependent ? Explai 

 this. Where do most migratory western species winter 

 Where do our eastern migratory Sparrows and berr 

 eaters winter ? Where do the majority of our eastern ii 

 sectivorous species winter ? What route do they follow 

 How far south do some Plover and Snipe winter ? 



Times of Migration (Chapter IV, pages 49-53). Thi 

 branch of the study of bird migration is covered muc 

 more fully under the section devoted to seasonal lessons 

 where the method of treatment is suggested. The matte 

 here given should be used in connection with the adde 

 material in the section named. 



Manner of Migration (Chapter IV, pages 54-57). Whs 

 is the first step in the fall migration ? Do old or youn 

 birds lead the way ? What birds fly by night ? Why 

 Give examples. What birds migrate chiefly by day 

 Why ? Give examples. What birds migrate exclusivel 

 by day ? Why? Give examples. What constitute higl 

 ways of migration ? At what height may migrating hire 

 travel ? Of what advantage is this height to them ? Whe 

 are birds attracted to lighthouses ? How may one obser\ 

 the night migration of birds ? How many birds were thu 

 observed at Tenafly, N. J. ? Describe the observatior 

 made from the Bartholdi Statue. 



