African Pioninae. 



127 



comparing the structural differences in their beaks, which in fully 

 adult specimens are frequently noteworthy. Of course, it must 

 always be borne in mind that young examples still show the broad 

 nestling type of beak, which more frequently than not is characteristic 

 in a more or less modified condition of female birds, though in some 

 cases habits of the particular species have rendered it characteristic 

 of the males, as I have already pointed out. 



MRS GRIFFIN S GREY PARROT. 



(From a Photograph by Mr W. H. Hall, Widnes.) 



