Bui. 1268, U. S. Dept. of Agriculture 



Plate III 



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Fig. I. — Tree-trunk Trap 



Operated at station of Richard B. Harding, Cohasset, Mass. 



Fig. 2. — Folding Warbler-trap 



Used by T. Donald Carter and R. EL Bowland In conducting studies with Brewster warblers. 

 'I be trap contains an adult male of this species 



