Conclusion 295 



and that is the ever vigilant Blaek-back gull, and hence 

 the presence of dozens of the eggs of this species, made to 

 visitors by the watchers, the ostensible object being to 

 lessen the supply of these rapacious gulls. 



A visitor cannot help being impressed with the mag- 

 nitude of birds of this class, for he has to step very warily 

 unless damage is done to the eggs, which are laid all over 

 the place. 



