OBSERVATION OUTLINE 385 



VI. Building. 



1. Method of Construction. 



Excavating (exs. Woodpeckers and Kingfisher). 

 Weaving (ex. Oriole). 

 Plastering (ex. Swallow). 



2. Number of Days required. 



3. Habits of Male during Nest-building. 

 Works with female. 



Works alone. 

 Sings while female works. 

 Brings material to female. 

 Absents himself from nest. 



VII. Eggs. 

 Number. 

 Color. 

 Markings. 



VIII. Incubation. 



Interval between completion of nest and beginning of 



sitting. 

 Length of incubation. 

 Habits of male during time. 



Takes place of female on nest. 



Feeds female on nest. 



IX. Young. 



1. Condition at Hatching. 

 Feathered (ex. Quail). 

 Naked (exs. Robin and Oriole). 



2. Conditions during Growth. 

 Position of feather tracts. 

 Daily increase in weight. 

 Respiration. 



Heart beats. 



Time when eyes open. 



Time spent in nest. 



3. Condition on leaving Nest. 



