The Roseate Tern 



( Sterna Dougalli) MONTAGU. 



MALES, FEMALE, NEST, AND EGGS. 



The Arctic Tern 



( Sterna mdcrura ) NAUMANN. 



MALES. FEMALE, NESTS, EGGS, AND YOUNG. 



HIS is the only instance of two species being placed together in one case, 



preserved. Few Museums are the proud possessors of the Roseate Tern with its 

 nest and eggs, as they are exceedingly rare. The Arctic Tern, however, is a very 

 abundant species, and in some parts of our coast it breeds in countless numbers. 

 In the picture there is little that will separate the two species, but they are really 

 very different. 



The Roseate Tern owes its name to the delicate pink tinge on the under 

 parts, but which, after death, unfortunately fades away on exposure to light, 

 although it is still traceable in our specimens. The other distinctive characters 

 are its lighter colour, black beak, and white streamers ; the eggs are more pointed, 

 and, so far as the Curator has seen, they are more constant in colour and easily 

 distinguished from those of the Arctic Tern. 



The Arctic Tern has a dull red beak, pearl-grey under parts, and the outer 

 web of the streamers dark grey. The eggs are more obtuse and vary exceedingly 

 in colour and markings. The nests of both species are mere hollows in the turf, 

 lined in some instances with grey Lichen which abounds on the rocks. They were 

 cut out and brought away intact. 



The rockwork is a faithful copy of the Felstone in tbe original habitat, and 

 is partly covered with various species of Lichen from the same locality. 



Collected by Dr. W. H. Dobie and the Curator, 1893. 



but as they were found breeding together they have been thus 



KEY. 



ROSEATE. 



ARCTIC. 



ROSEATE. 



ROSEATE. 



ARCTIC. 



ROSEATE NEST AND EGGS. 



ARCTIC NEST AND EGGS. 



ARCTIC NEST AND EGGS. 



ARCTIC YOUNG. 



ARCTIC NEST AND EGGS. 



ARCTIC. 



