BOSTON PUBLIC GARDEN 19 



den with its attractions of varied growth 

 and water under the lights a larger share 

 of migrants than a similar acreage in the 

 country is wont to receive. 



It has been already remarked that there 

 is no contiguous territory for the visitants 

 to move into. So, once in the Garden, they 

 with few exceptions remain throughout the 

 day, thus securing to visitors later in the 

 day fair chances to find them and observe 

 them. Some birds choose to stay two, three, 

 or more days. 



Some species, for instance, the bluebird, 

 the cedar waxwing, and the sandpiper, make 

 a hasty visit after the day is well opened, 

 flying in for a brief call, it may be, and ris- 

 ing on wing and going on again. It is well 

 known that the bluebird migrates in this 

 way by day. The short calls which occa- 

 sional sandpipers and flocks of cedar wax- 

 wings and some flocks of robins make 

 indicate that the same is also true of these 

 species. 



The period of migration covered by the 

 species which are in the habit of visiting 



