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stance, similar to that used by the other species, 

 which renders the nest very hard and firm when 

 the cement is dry. The eggs, which are white, 

 and four or five in number, are very long in pro- 

 portion to their breadth. 



TEEN, ARCTIC. 



STERNA ARCTICA, Temm. 



The Arctic Tern, which even on the wing may 

 easily be distinguished from the Common Tern, 

 both by its cry, which is shriller, and by its tail, 

 which is more elongated, is precisely similar in 

 its habits to that species, and frequently occurs 

 intermingled with it. In the northern and western 

 Islands of Scotland, on many parts of the coast 

 of the mainland, and in the Frith of Forth, as 

 well as in various parts of England, it is common. 

 The eggs, of which there are generally three or 

 four, are deposited in sandy or rocky places. 

 They vary greatly in colour, being sometimes of 

 a greyish yellow, and frequently of an olivaceous 

 or brownish hue, with black and purplish grey 

 blotches. 



