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ARCTIC TERN. 
71. Sterna paradisce. 15 inches. 
A similar bird to the last; more northern in its distribution; 
and the pearly gray mantle somewhat darker both above and 
below. Bill quite red and feet much smaller and bright red. 
When their nesting colonies are approached they will rise in 
clouds, circling about high in the air, uttering at times their 
peculiar cry. 
Nest. —Similar to the others, with very little if any attempt 
at nest building. Usually placing the two or three eggs on the 
bare sand or gravel just above the water line. There is no 
difference in the color or markings of the eggs from the others 
(1.75 x 1.40). 
Range. —More northerly than the preceding, to the Arctic 
Regions and wintering from California to the Gulf States. 
ALEUTIAN TERN. 
73. Sterna aleutica. 15 inches. 
This handsome Tern is of the same form and size as the 
Common Tern, but has a darker mantle, and the forehead is 
white, with a black line extending from the bill to the eye. 
Nest. —Is much the same as the Arctic, but the eggs are 
somewhat smaller and narrower (1.70x1.15). 
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