BIRDS 



29 



tnemies of the different 

 species are present ? Much 

 of this side of the prob- 

 lem will be worked out 

 i aturally in connection 

 with nesting habits, the 

 study of nest building, 

 and the fate of the differ- 

 ent nests in the spring. 



Pay particular attention 

 to the bird-food plants of 

 the area with reference to 

 abundance of food at dif- 

 ferent seasons. Note the 

 condition in this respect 

 for the different months. 

 Is the area stripped of 

 available food by the time 

 robins and bluebirds have 

 migrated in the fall ? May 

 this help to explain bird 

 migrations? 



Note in detail what pro- 

 visions have been made in 

 your district to supply the 

 necessaries of bird life, 

 bird houses, drinking and 

 bathing fountains, plant- 

 ing of food trees. What 

 ii- done to protect the birds 



from enemies ? What in- 



,11,1 in cement with deep chinks filled with soil 



tiuence have these provi- and planted with ^ osse ^ fen ^ and wild 



sions exerted on the bird flowers 



population as compared Photograph by the author 



* Ri - 



fountain. Natural rocks laid 



