SLATE-COLORED JUNCO 119 



with fox sparrows. A previous movement 

 had brought on April 2 nearly as many, 

 but most of these alighted on the Common. 

 Also on March 29, 1905, a flock of quite forty 

 alighted on the Common, almost to the ex- 

 clusion of the Garden. 



The period of migration covered forty- 

 two days in 1902, thirty-seven days in 

 1903, forty days in 1905, forty- two days 

 in 1907, and fifty- two days in 1908. The 

 silvery, trilling song has sometimes been 

 heard, but usually only the several calls 

 which belong to the species. 



On the southward migration in the au- 

 tumn the Junco is quite as much in evidence 

 in the Garden as in the spring. The species 

 never fails to appear successively in small 

 flocks, at times, however, numbering twenty 

 birds, through the month of October and 

 sometimes to the middle of November, 

 one bird being seen on the Common in 1907 

 on November 17, and one in the Garden in 

 1908 on November 19. When a single bird 

 is present, it is not infrequently shyly up 

 in a tree- top, and makes its presence known 



