CARE OF POULTRY 



349 



a sitting hen. Incubators are of all sizes and are used mainly 

 by persons raising poultry on a large scale. Directions for 

 operating the incubator are always supplied by the manufact- 

 urer and should be closely followed. 



In the natural method the little chicks are cared for and 

 kept warm by the hen, but in the artificial method the young 



91. 



AN INCUBATOR 



chicks must be kept warm by an artificial mother, called a 

 brooder. Brooders are variously constructed, but are usually 

 of two parts, one warmed by an oil lamp, for sleeping, and 

 another warmed by the sun through glass, for a runway. 

 After the chicks are a few weeks old they can get along with- 

 out extra heat. There has recently been invented a brooder 

 known as the "lampless" brooder. It keeps the chicks warm 



