CENSUS OF NESTING BIRDS 71 



hedgerows replace some of the wire fences on the farm, and 

 trees should line the highways. In extreme cases, we should 

 provide water and food. Then, in addition to these measures, 

 wherever possible, or wherever opportunity offers, as is the 

 case in Swope Park, we should leave some rather extensive 

 area undisturbed for the preservation of those species that are 

 too modest or too aristocratic to care to associate with man. 

 The English Sparrow has purposely been left out of this 

 discussion. It is a well known outlaw bird. There are hun- 

 dreds of them in the Park, especially about the Shelter House 

 and about the Zoo. They interfere with but few species of 

 other birds, and this interference is chiefly in a struggle for 

 the nesting sites of such birds as the Bluebird, Purple Martin 

 and Wren. This interference, however, is so great that unless 

 we lend a hand and help in the struggle, the English Sparrows 

 will all but exterminate these more desirable birds from our 

 home premises. 



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