POULTRY HOUSE CONSTRUCTION 
heat generated by the fowls and make that part of 
the house warmer than would be imagined. They 
should hang clear of the perches several inches, in 
order that undesirable gases and foul air may fall 
to the ground; and use them only when necessary 
on very chilly nights, as fowls should always have 
the benefit of as much pure, unconfined air as pos- 
sible. ‘The curtains may be attached to rollers 
at the ceiling of house, and conveniently operated 
much the same as window blinds. 
The matter of correct ventilation is one of the 
most vital features of poultry house construction. 
Ventilating Pure air is even more important for 
the House = poultry than for other domestic ani- 
mals, because their body temperature is several 
degrees higher. Aside from this, there always is 
more or less of an unpleasant odor existing in 
poultry houses, and it is necessary that this be dis- 
sipated, as well as an abundance of pure fresh air 
supplied for the fowls to breathe. Also, in the 
roosting quarters, the warm air exhaled from the 
lungs of the fowls is always heavily charged with 
moisture, and this, coming in contact with the cold 
roof and walls, is condensed in a poorly ventilated 
building, and in freezing weather appears as hoar 
frost, which freezes in drops in cold weather or 
melts and drops to the floor when the house has 
been warmed up by the sun. 
Up until the last few years this matter of cor- 
27 
