The Bird Rock G 



roup. 



17 



cal egg would roll and fall. The pear-shaped M lines ' e 



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 Mtirres' eggs, no two of which are 

 alike, is thought to aid the birds in recognizing their own 1 



BRUNNICH'S MURRE. 

 the Group. 



When hatched the Murres are covered with a sooty black down. 

 >me instances they are taken to the water when still very 

 young; in others they acquire the power of flight before Leaving 

 their birth-pl 



M mi id for this reason thi ften 



gathered in large numbers by fishermen, «»r, when they 1 .m be 

 . of, by " eggers " who make a b _ the 



