158 METHODS OF ATTRACTING BIRDS 



attachment to be securely fastened to the plate. 

 To illustrate the uses to -which this may be put, 

 two instances which happened last summer may 

 be cited. A nest of a song sparrow was found on 

 the ground. An attempt was made to spread out 

 the legs of the tripod so as to get the camera 

 down low enough, but it could not be arranged. 

 So a post was driven into the ground near the 

 nest, and then the screw was turned into the post 

 and the camera attached. A little later in the sea- 

 son, an oriole's nest was found so high up in an 

 old apple tree that it was almost impossible to at- 

 tach the camera ; so the screw was fastened to the 

 largest limb and the camera attached to this. And 

 many other cases will arise where this will be of 

 great service. 



Method ofworhing Shutter. — While the birds 

 will soon become accustomed to the nearness of 

 the camera, some device is needed so that the 

 operator may stand at a distance and work 

 the shutter. This may be done by means of 

 long rubber tubing, attached to the shutter, and 

 through which air is forced with a bicycle pump, 

 at the other end. As still another means, a piece 

 of metal may be attached to the lever of the 

 shutter, to lengthen it so that it will snap more 

 easily ; and to this may be tied a piece of linen 



