CHAPTER XIII 



COMPLETE LIST OF BIRDS OB- 

 SERVED IN THE SOMERSET 

 HILLS 



As I explained in the preceding chap- 

 ter, owing to the widespread confusion 

 resulting from the loose way in which 

 terms of relative abundance and rarity 

 are used by ornithologists and others, I 

 have confined myself to the following 

 eight terms, which may be taken as a 

 standard to express a gradual decrease 

 from abundance to rarity: 



Abundant. 



Common. 



Frequent. 



Uncommon. 



Occasional. 



133 



