PERCHING BIRDS. 161 



form is light, without being feeble. It is very 

 generally distributed through the wooded dis- 

 tricts, preferring old plantations, and woods with 

 tall trees. Its note is very peculiar, resembling 

 the word "twee," repeated several times in sugces- 

 sion ; at first slowly, but afterwards in a hurried 

 manner, and accompanied by a singular tremulous 

 motion of the wings. Its sole food appears to be 

 insects. 



The WILLOW WARBLER is of frequent occurrence in 

 gardens, plantations, hedges, and willow-grounds. 

 It is very plentiful in the counties round about 

 London, and is, on the whole, much more gene- 

 rally found than the preceding species. Its song, 

 though possessing little variety, is soft and pleas- 

 ing, consisting of several plaintive notes, in a 

 regular descending scale. In appearance it is 

 much like the wood warbler, being principally 

 distinguished by its paler colour and shorter 

 wings ; but still more closely resembles the chiff- 

 chaff, from which it is, in fact, very difficult to 

 distinguish it, except by the different colour of 

 the markings on the egg. 



