THE BLACK-HEADED GULL. 
161 
The Laplanders, according to Regnard, cover their heads 
with a cap made of the skin of a Loom (Loon), which word 
signifies in their language, lame , because the bird cannot 
walk well. They place it on their head in such a manner 
that the bird's head falls over their brow, and its wings 
cover their ears. 
“ Northern Divers/' says Hearne, u though common in 
Hudson's Bay, are by no means plentiful; they are seldom 
found near the coast, but more frequently in fresh-water 
lakes, and usually in pairs. They build their nests at the 
edge of small islands, or the margins of lakes or ponds; 
they lay only two eggs ; and it is very common to find only 
one pair and their young in one sheet of water — a great 
proof of their aversion to society. They are known in 
Hudson's Bay by the name of Loons." 
The Great Northern Diver measures two feet ten inches 
from the tip of the bill to the end of the tail, and four feet 
six inches in breadth. 
BLACK-HEADED GULL. (. Larus ridibundus .) 
Length, seventeen inches ; extent, three feet six inches ; 
bill, thighs, legs, feet, sides of the mouth, and eyelids, dark 
blood red ; inside of the mouth, vermilion ; bill, nearly two 
