OUTDOOR EXERCISER. 177 



same flocks, and 3, 3, 3, 3 the midway yards, built high as 

 was described, being intended for jumping and flying. 

 The runways enable the birds to run from 1 to 2, pass- 

 ing through 3 on the way. Across the center of yard, 

 3, there is a'board fence set at right angles with the run- 

 way. This fence is composed of a vertical frame, which 

 supports horizontal movable boards, each six inches 

 wide, more or less, as may be convenient. At first, 

 leave all the boards out till the birds are used to the run- 

 ways. Then slide in the bottom board, after a few days 

 add another board, and build up in this way by easy 

 stages. The dotted lines at 3 show the location of the 

 fences. 



Now, for the incentive to running back and forth the 

 whole length of the runways and giving a good jump 

 and fly at the halfway house. This incentive consists 

 in locating a series of feed droppers over 1, 1, 1, 1, and 

 another over 2, 2, 2, 2, at the respective centers as indi- 

 cated by the dotted lines. These droppers or cylinders 

 may be like those previously described, which are .sus- 

 pended over the tilt boxes of the indoor exerciser. 

 Further on, we shall describe other feed droppers in the 

 form of pouches or sieves instead of cylinders. 



There is a bell at the nearby line of cylinders and 

 another at the distant row. The operator stands at A 

 to move the cylinders of the nearby pens and rings the 

 bell, while, without leaving the spot, he can also ring 

 the distant bell when desired by means of a bell wire, 

 stretched from A to B, and he can also move the 

 cylinders over 2, 2, 2, 2, without leaving his post at A, by 

 means of a simple contrivance illustrated in Fig. 82. In 

 this cut, the feeder is supposed to be looking directly 

 down upon the cylinders and pens, it being a ground 

 plan of three runways. The artist has broken off these 

 runways, however, and the operating wires also, and 

 omitted the halfway pens, the entire length being too 

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