NESTING CONTRIVANCES 57 



division board with a circular opening seven and one- 

 half inches in diameter is placed across the box twelve 

 inches from the back end and fifteen inches from the 

 front end. The back section is the nest proper. In- 

 stead of a close door at the entrance, a light frame is 

 covered with wire netting. The door is ten and one- 

 half inches wide and ten inches high and does not fill 

 the entire entrance, a good margin being left all round 

 to avoid friction. It is hinged at the top and opens 

 up into the box. The hinges are placed on the front 

 of the door. 





FIG 67 : ROOST PROTECTED BY NEST 



The trip consists of one piece of stiff wire about 

 three-sixteenths of an inch in diameter and eighteen 

 and one-half inches long, bent as shown. A piece of 

 board six inches wide and just long enough to reach 

 across the box inside is nailed flatwise in front of the 

 partition and one inch below the top of the box, a space 

 of one-fourth of an inch being left between the edge of 

 the board and the partition. The purpose of this board 

 is only to support the trip wire in place. The six-inch 

 section of the trip wire is placed across the board and 

 the long part of the wire slipped through the one- 

 fourth-inch slot and -lasaed down close to and in front 



