AVES FALCONID^. 



569 



Lower parts : Chest and breast black ; flanks white with some admixture 

 of black feathers ; abdomen, thighs and under tail-coverts white. 



Bill : Yellow, except at the base of both upper and lower mandible, 

 which is dull horn-blue. Cere and bare skin about the eye, bright yellow. 



Iris : Deep hazel-brown. 



Fig. 2i 



Ibyder mcgalopterus. P. U. O. C. 7891. Right foot. Natural size. 



Feet: Yellow, or yellow with brownish wash. 



Immature birds, and young of the year (see Figs. 285 and 286.) 

 Head : Brown, with a strong cinnamon tinge, each feather tipped with yel- 



