SYSTEMS OF POULTRY KEEPING 



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at such (minimum) distance apart, and the number of birds in each 

 be so limited, that the area serving as a range for them will provide 

 a good foraging ground. The flock is divided into colonies. Hence 



FIG. 80. Extensive system at the Provincial Poultry Breeding Station, 

 Edmonton, Alberta. Colony houses with large temporary yards. (Photo- 

 graph from the station) 



the name " colony system," applied especially to the following most 

 notable systematic development of extensive methods. 



The Rhode Island colony system. The development of a colony 

 system of housing poultry, with appropriate methods of management, 



FIG. 81. Colony houses without yards at the Wisconsin Agricultural College 

 (Photograph from the college) 



seems so logical and natural that it might reasonably be supposed 

 that, as farmers all over the country increased their stocks of poultry, 

 this system would be generally adopted. On the contrary, in all but 



