120 PRINCIPLES OF POULTRY-HOUSE CONSTRUCTION 



Windows and Curtains. Window and curtain openings in the 

 poultry house are valuable, in that they admit sunlight and fresh air, 

 cleansing the house, and making it a congenial place for the birds. 

 They should be so arranged that they can be opened quickly and 

 easily, and the danger of breakage thus reduced to a minimum. 



20' 



jToo narrow find too low- 



FIG. 76. Three plans for placing openings in front wall of poultry houses. 



Sunlight is necessary to the fowls, but too much glass makes 

 the house cold at night and too warm in the daytime. An excessive 

 amount of glass makes the house too expensive. A good rule for 

 large houses using muslin openings is to allow one square foot of 



