REVIEW 825 
to lay, and because the chicks grow faster after the hen is removed. 
The age at which the hen should be allowed to wean her chicks 
depends upon the weather and season,—usually from four to six 
weeks is the average. 
At about ten weeks, or as soon as sex can be distinguished, the 
sexes should be separated if maximum growth is to be realized. 
REVIEW. 
. What terms are used to define the two methods of incubation? 
. Enumerate disadvantages of natural incubation. 
. Discuss artificial incubation. 
. Mention three points which will aid one in determining which system to 
follow. 
. Describe the broody hen. 
. When is the best time to set the hen? 
. Name and describe two methods of setting hens in large numbers. 
. Give the desirable features in individual sitting coops. 
. How would you make a good nest, and what material could be used? 
. Enumerate five points which should be considered when selecting the 
sitting hen. 
. Describe the procedure in setting the hen. 
. How many eggs under one hen? 
. Describe method of caring for and feeding the sitting hen. 
. Give three cautions to insure cleanliness in and around the nest. 
. Is it important to test the eggs? Why? 
. What factors should be recorded in sitting records? 
. Name the periods of incubation for different species of birds. 
. What special attention is required at hatching time? 
. Give four causes of poor hatches. 
. Describe two methods of marking newly hatched chicks; why used? 
. Describe a good brooding coop for hen and chicks. 
. Outline the care of the young chicks. 
. Outline a complete system of feeding baby chicks in natural brooding. 
. What is the effect of body parasites upon the growing chicks? How 
prevented? 
. What are the advantages of early weaning? 
