110 



Farm Poultry 



and early spring, some ventilation should be 

 given. Farmers and poultry men should aim to 

 ventilate their poultry houses as they ventilate 

 their own sleeping apartments. Little or no 

 ventilation is needed at night during the severest 

 weather, but during the day, when the fowls are 

 more or less actively engaged in scratching in 

 the litter, the house should be ventilated just as 



Fig. 38. A good ventilator. 



regularly as a sleeping apartment should be aired 

 when not occupied or when the occupant is ac- 

 tively engaged in light manual labor. Houses 

 with single walls will become quite frosty on 

 the inside during the severest weather, and this 

 will cause more or less dampness whenever the 

 temperature is sufficiently high to thaw the frost 

 from the walls and roof. At this time ventilation 

 is most needed and may be supplied by placing 



