Fig. 15 

 Breeding distribution of 

 {a) common tern and (b) 

 arctic tern in England. 

 There are also breeding- 

 records of the common 

 tern from Staffordshire, 

 near Burton-on-Trent in 

 1952 and 1953. 



rELONG. 



not since last century 

 present, but breeding not 



proved 

 under 10 nests 

 under 100 nests 

 under 1000 nests 

 over 1000 nests 



rELONS. 



