�4FOR PRACTICAX WORKERS
��Electrically Operated Camera- Shutter for Photographing Birds
IX the attempt to photograph small wild animal life, particularly birds, it is necessary to have some means of operating
��sons on some suitable food supplied for the purpose.
There are three methods now in general use for operating the shutter. In one a string is attached to the shutter lever and simply pulled at the opportune moment.
���A brown creep- er partaking of a free lunch put ^ on a fence post
��The magnets are attached to the camera bed with clamps where they operate the shutter release
��the camera from a distance. Many meth- ods have been tried with varying success, but the method described herein is conceded to be the best. The idea is simply to focus the cam- era on a spot ^\here from pre- ious observa- tion the birds are known to come, and to have some means of operat- ing the shutter from a distance.
�����A chickadee near its nest with a bill full of grubs and a tufted titmouse on a post, attracted by suet
��The spool for carrying the flexible cord incloses the battery for oper- ating the magnetic shutter release
��While fairly good, this is difficult to work at long distances and has the disadvantage of
being liable to be operated by outside forces, such as wind- blown twigs. A long tube at- tached to the pneumatic re- lease lacks the above disad- vantage but is not instantane- ous in its action. Besides, the rubber will, in a short time, be-
��In the springtime the best places to focus come hard and useless from lying on the are On or near the nests, and in other sea- damp ground and may be easily damaged in