52 BIRD-LIFE OF THE BORDERS. 



approaching hosts from the far north, flying from the arctic 

 winter. 



It is unnecessary to recapitulate in detail all the manifold 

 sights and signs which serve to demonstrate the feature of 

 the season. The bird world is on the move. The nesting 

 season is over ; the cares of the spring and summer are 

 past ; and the universal southward movement towards winter 

 quarters has commenced. It is conspicuous enough in 

 July, but attains a far greater development in August, and 

 approaches its climax when the Swallows are seen congre- 

 gating on the trees in September. 



