A BIRD'S NEST, AND OTHER ANIMAL HOMES 43 



defends. The male salmon scoops out gravel to make a 

 shallow nest, in which the female deposits her eggs, aftcr 



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f a. 



O.SJ 



m 

 r. 



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which he covers the eggs. The males of the species of 

 pipe-fish and sea-horses receive the eggs of the female 



