MILLIONS OF BIRDS cover the islands when they are not away feeding at sea. 

 The ocean is alive with anchobetas, small lishes, on which marine bird life is 

 totally dependent. Should the balance of nature reduce the available food 

 supply, the birds and Peru's great industry would suffer. When the birds are 

 at home the islands loom black on the horizon. And when most of the birds are 

 away feeding, the guano-covered islands are white as snow in the sunlight. On 

 the opposite page thousands of guanayes, Pbalacrocorax bougainvillei, are 

 so dense among mound-like nests that one could not walk among them. 



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