Windows and Ventilation 117 



be partially opened for ventilation in warm weather, 

 and during the extreme heat of summer they may 

 be left entirely open. The opening should be covered 

 with poultry netting to confine the fowls, and if the 

 mesh is fine enough to exclude the English sparrow, 

 annoyance is sometimes avoided. 



Whether the windows are made to slide either 

 vertically or horizontally, or are hinged either at 

 the top or at the sides, is a matter for each poultry- 

 man to determine for himself. After considering 

 the various methods of construction it is for the 

 owner or manager to select that which appears to 

 be best for him. He should be able to give a reason 

 for the particular construction of every poultry 

 appliance with which he has to deal. 



Comparatively cheap window shades may be 

 made of thin matched lumber nailed together so 

 as to make a solid shutter. This shade, or shutter, 

 may be hinged to the side of the poultry house 

 just above the window with loose hinges, the lower 

 edge supported by a wire, as shown in Fig. 40. 

 Such shades exclude the sun and serve as a protection 

 from the heat during the warmest part of the year 

 when the windows are left open. The loose hinges 

 permit of easy removal for winter storage. 



Ventilation. During the warm weather the open 

 windows will afford sufficient ventilation, but dur- 

 ing the colder months some means of ventilating 

 the building should be provided, aside from that 



