THE BIRD STUDY BOOK 



any great number of them come to grief during the 

 summer rains. It is, however, not called upon for a 

 long term of occupation. Within a month after the 

 two white eggs are laid the young depart on their 



Nest of the Ruby-throated Hummingbird 

 tiny pinions. Young birds that require a longer 

 period for growth before leaving the nest are fur- 

 nished usually with more enduring abiding places. 

 , [30] 



