204 POULTRY BREEDING AND MANAGEMENT 



for a poultry house and flock. During part of the spring 

 a quarter of an acre may be fenced off with a portable fence, 

 and the flock put in a portable house, such as illustrated 

 below. The flock would be turned loose on free range 

 during the summer, and the following year the house and 

 fence moved onto fresh ground. A fresh quarter acre should 

 be given them each year for four years and in the fifth year 



PORTABLE FENCE 

 Designed and used at Oregon Station. 



they would be put back on the original quarter to follow 

 the same rotation. The manure from the 50 fowls would 

 keep the acre of ground in good fertility for the growth of 

 crops, and soil contamination, with consequent diseases in 

 the flock, would be practically eliminated. If the ground is 

 fairly dry and the flock be not kept shut in the yard more 

 than three months, 100 fowls could be kept on the same 

 acre, using two colony houses. In northern sections where 

 snow covers the ground two months or more in the winter, 

 additional scratching room should be provided in the form 

 of a cheap shed illustrated on page 183. 



The farm flock of 50 or 100 fowls could be made the unit 

 of larger and extensive plants. For every 100 fowls an 



