British Birds, Vol. VII., PI. 10. 



Z5 



^f 



Eig 25, Much worn Degenerate Feather and a Filoplume from Chin of 



Adult Rook X 7 diam. 



Fig. 26, An " Aborted Pin " from Chin of Adult Eook x IS diam. 



For explanation see p. 139. 



