The Bird Rock Group. 17 
cal egg would roll and fall. The pear-shaped Murres’ eggs, 
however, when moved by the bird or wind, revolve about their 
own point, practically without change of position. ‘The wide 
variation in the colors of Murres’ eggs, no two of which are 
alike, is thought to aid the birds in recognizing their own eggs. 
BRUNNICH’S MURRE 
From the Groug 
When hatched the Murres are covered with a sooty black down. 
In some instances they are taken to the water when still very 
young; in others they acquire the power of flight before leaving 
their birth-place. 
Murres’ ervygs are edible, and for this reason they are otten 
gathered in large numbers by fishermen, or, when they can be 
disposed ol, by * eggers "" who make a business of visiting the 
