BIRDS IN RELATION TO THE ALFALFA WEEVIL. 



53 



In the first observation a sparrow was noticed feeding four nearly 

 fledged young. The parent bird appeared at the nest with food at 

 an average of once every TJ minutes. When examined on the last 

 trip the incoming bird had two grains of wheat in its bill. 



2>P QUARTER 



3*.t> QUARTER 



4 T .H QUARTER 



EXPLANATION 



ALFALFA 



WFEWLS BEETLES 



LARS 



FIG. 3. Diagram showing the food of young English sparrows during the four quarters of 



their nestling life. 



Another observation gave an average of 5 T 5 T minutes for every 

 feeding. This nest contained two young, about 4 or 5 days old, but 

 the writer failed to secure the adult at the end of the hour. 



Observation of a brood of six young, 4 to 5 days old, showed that 

 feedings took place at 5-minute intervals. The male, which was 

 captured, carried IT larvse of the weevil in his bill. 



