BIRDS. 437 



Again, the barbs of the feathers in various widely-distinct 

 birds are filamentous or plumose, as with some herons, 



Fig. 47. Paradisea Papuaua CT. W. Wood). 



ibises, birds of paradise, and Gallinaceae. In other cases the 

 barbs disappear, leaving the shafts bare from end to" end; 



