PART II. 



MODERN CLIFF-DWELLERS 



(Gannets, Guillemots, Auks, Puffins, Kittiwakes, Etc.) 



ONE BY one, retiring like an army of heroes 

 from a well-fought, but unequal battle, the Murres 

 and their allies have yielded up fortress after fortress 

 along our coast as the encroachments of man have 



GREAT BIRD ROCK AT EVENING 



pushed their breeding-grounds farther and farther 

 toward the wilds of the north. The time was 

 when they occupied the rocks off Boston harbour, 

 and swarmed upon the islands of the New England 

 coast. But this was long ago. Only the Black 

 Guillemots maintain themselves as far south as the 

 islands of the coast of Maine by hiding their eggs 

 under forbidding boulders, as also do a very few 



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