lUKPS 



:21» 



enemies of tlie ditiereiil 

 speeies are present ? M ncli 

 of this side of the prob- 

 lem will be worked ont 

 natnrally in (.-onneeliun 

 with nesthig habits, tlie 

 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 

 abiuidance of food at dif- 

 ferent seasons. Note the 

 condition in this respect 

 for the different months. 

 Is the area strip[)ed of 

 availal)le food by the time 

 robins and bluebirds have 

 miu'rated in the fall? ^Nlav 

 this help to ex[)lain bird 

 mi^•rations ? 



Note in detail w hat pro- 

 visions have been made in 

 your district to supply the 

 necessaries of bird life, — 

 l)ird houses, drinking' and 

 bathing fountains, plant- 

 ing of food trees. What 

 is done to protect the birds 

 from enemies? What in- 

 fluence have these pro\ i- 

 sions exerted on the l)ii(l 

 po[)ulation as coinparcd 



Ki«.. 11. Bird ft»iintiiiii. Natural rocks laid 

 in cement with deep chinks tilltd witli soil 

 and planted with mosses, ferns, ami wild 



ri(nvers 



t^hut(>j,'ntpli I'v the iiatlim- 



