*/^ \ / Injurious 



Weed Uo 100 Insects 

 Seeds \ aa ( 



Adult Sparrow in 

 an agricultural 

 district. 



Adult Sparrow in a 

 fruit-growing 

 district. 



Nestling 

 Sparrow 



Green Woodpecker. 



Kestrel. 

 BIRDS AND THEIR FOOD 



Rook. 



This diagram illustrates to what extent certain birds are harmful or useful in respect of our food crops. The evidence is 

 obtained by examining the bird's crop or gizzard at the time of death. The calculations were based on statistics published by 

 Dr. Collinge in the Journal of the Board of Agriculture. 



