SUMMARY. til 



still be desh'able, since in destroying large quantities of weed seed 

 they array themselves on the side of the Marshall Hall farmer against 

 invaders that dispute with him, inch by inch, the possession of his fields. 

 The most active weed destroyers are the quail, dove, cowbird, red- 

 winged blackbird, meadowlark, and a dozen species of native sparrows. 

 The utility of these species in destroying weed seed is probably at 

 least as great wherever the birds may be found as investigation has 

 shown it to be at Marshall Hall. 



