YELLOW WARBLER. 



743 



tinguished from the male, except in being rather 

 paler. 



This species greatly resembles the Pettychap 

 Warbler, from which it may be readily known by 

 its superior size : it also approaches the Wood 

 Warbler, which is known by its white belly and 

 tail-coverts : it is very abundant in some places, 

 affecting wooded and enclosed situations, where 

 willows abound : it arrives here early in April, 

 and soon commences its song, which is simple, 

 and similar to the words twit, t%vit, and is uttered 

 while running up and down the branches of trees 

 in search of insects : in the beginning of May it 

 makes an oval nest with a small opening at the 

 top, composed of moss and dried grass, lined with 

 feathers, and placed in the hollow of a ditch or 

 low bush : the eggs are six or seven in number, 

 white, spotted towards the larger end with fer- 

 ruginous ; some are sprinkled all over with that 

 colour : it disappears in the autumn, and is abun- 

 dant in many parts of Europe as well as England^ 



