TREE SPARROW 113 



ground again. From the trees the song 

 when given also comes. Some days in the 

 spring there is much singing. 



Very few White-throats as a rule choose 

 the Common in preference to the Garden. 



Invariably they are masters of the house 

 sparrows, driving the latter off when they 

 intrude. 



The last birds seen in the spring are 

 usually females. 



48. Tree Sparrow 



Spizella monticola 



Three times only in the spring has the 

 Tree Sparrow visited the Garden, and on 

 each occasion a single bird for one day only. 

 The dates are March 29, 1905, March 25, 

 1907, and March 27, 1908. On the first oc- 

 casion two other birds of the species were 

 seen on the Common. The bird of 1908 en- 

 joyed a bath in the waters of the pond as 

 they touch the shore of the small island. 

 At the time the water was low on account 

 of being drawn off, and it sufficiently re- 

 ceded from the shore to offer advantages. 



