BIRDS'-NESTS 125 



priate the last year's nest, as the wren, swallow, 

 bluebird, great- crested flycatcher, owls, eagles, fish 

 hawk, and a few others. Secondly, those that build 

 anew each season, though frequently rearing more 

 than one brood in the same nest. Of these the 

 phoebe-bird is a well-known example. Thirdly, 

 those that build a new nest for each brood, which 

 includes by far the greatest number of species. 

 Fourthly, a limited number that make no nest of 

 their own, but appropriate the abandoned nests of 

 other birds. Finally, those who use no nest at all, 

 but deposit their eggs in the sand, which is the case 

 with a large number of aquatic fowls. 



1866 



