200 



POPULAR SCIENCE 2WXTHLY. 



II. 



The method of the study and photography of birds now to be de- 

 scribed consists in first bringing the birds to you and then camping be- 

 side them. They can thus be watched and photographed at arm's 

 length, or even as near as one would hold a book to read, and under the 

 most perfect conditions of light and position, for hours or days at a time, 

 while quite unconscious of being observed. 



Fig. 1. Female Chestnut-sided Warbler, Brooding her>)Young on a Warm Day. 



To be more explicit the method depends mainly upon two condi- 

 tions: (1) The control of the nest or nesting site, and (2) the conceal- 

 ment of the observer. 



If the nest like that of an Oriole, L'obin, Flycatcher, Waxwing or 

 Vireo is fastened to any leafy branch, the nesting ])ough or twig is cut 

 off, carefully taken down, carried to a convenient spot where there is 



