This document discusses incubation, hatching, brooding, and the requirements for each process. It describes: 1) The two types of incubation - natural incubation using a broody hen or artificial incubation using an incubator. Requirements for each like temperature, humidity, ventilation and egg turning are explained. 2) The parts and functioning of an incubator including the setter and hatcher sections. Forced air and still air incubators are also defined. 3) Testing incubated eggs on days 5-7 and 17-18 using candling to remove infertile or dead embryos. 4) The definition and purpose of brooding young chicks. The types of brooding - natural using a hen or artificial using