COMMON TERN. 



509 



N ATA TORES. 



THE COMMON TERN. 



Sterna hirundo. 



Sterna hirundo, Common Tern, PENN. Brit. Zool. vol. ii. p. 196. 



MONTAGU, Ornith. Diet. 



BEWICK, Brit. Birds, vol. ii. p. 207. 



FLEM. Brit. An. p. 143. 



SELBY, Brit. Ornith. vol. ii. p. 468. 



JENYNS, Brit. Vert. p. 266. 



GOULD, Birds of Europe. 



Hlrondelle de mer TEMM. Man. d'Ornith. vol. ii. p. 740. 



pierre gar in, 



THIS species was long considered more common than it 

 really is, close examination having proved that two other 

 distinct species of Terns very frequently occupy the same 

 stations with it or localities very close to it, all of which 

 were for a time confounded under the name of Common 



