,', GEOGRAPHICAL DISTRIBUTION OF BRITISH BIRDS 



The climatic breeding-range of British Birds may be summa- 

 rised as follows : 



Arctic 78 



Arctic and subarctic . . .. . .57 



Arctic, subarctic, and subtropic ... 5 



Subarctic 64 



Subarctic and subtropic . . . .116 

 Subarctic, subtropic, and tropic . . . 21 



Subtropic 28 



Subtropic and tropic . . . . .11 

 Tropic . 11 



391 



