52 BIRDS OF THE 



not. But it may be stated that generally 

 they are in song, and that a good sugges- 

 tion, if not a full realization, of what the 

 song of each species is may be obtained. To 

 be sure, it must usually be heard under the 

 disadvantages of noise, and the spirit of the 

 singer may not be as intense as when he is 

 on hi-s nesting-ground ; but knowledge and 

 pleasure untold may be derived by availing 

 of the opportunities afforded, and in calm- 

 ness of mind becoming attuned to the happy 

 life and the sweet expressions of it which 

 are at hand. 



One feature of the spring and summer 

 bird-life within the Garden is the presence 

 of a half-dozen European swans upon the 

 pond. These have been introduced in re- 

 cent years. In late autumn these swans are 

 removed to winter quarters. Another fea- 

 ture which has manifested itself also quite 

 recently is the permanent residence within 

 the Garden of a considerable flock of 

 pigeons, which have adopted a Kentucky 

 coffee-tree standing by the fern-grown 

 rockery as headquarters. These pigeons 



