Who Killed Cock Robin? 



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birds and their consequent death or departure, the elimina- 

 tion of insects necessary to effect pollination, and a conse- 

 quent shrinkage in the productiveness of the area, and in the 

 number of birds and mammals which are able to maintain 

 themselves. 



Natural communities appear to have a quite efficient way 

 of operating. The relationships are those of the ages. It 

 would seem that they should be interfered with as little as 

 possible and that any attempts to control future killers of 

 Cock Robin should be made only after changes are proved 

 to be absolutely necessary and there is certainty that changes 

 proposed will not be accompanied by undesirable repercus- 

 sions. 



