688 



PATAGONIAN EXPEDITIONS : ZOOLOGY. 



Lower parts: Throat and under-neck as described; a collar of dark 

 feathers below the white throat; breast, chest, sides and flanks dull white 

 or buffy white narrowly and closely barred with dull seal-brown ; the 

 abdomen about the vent and the thighs more distinctly buff and generally 

 immaculate or nearly unmarked ; the lower tail-coverts dull white or buffy 

 white, with narrow seal-brown bars. 



Bill: Horn-blue. 



Iris : Lemon-yellow to orange. 



Feet: Feathered as shown in the cut. 



Fig. 352. 



Bilbo magellanicus. Adult female, P. U. O. C. 7949. Natural size. 

 Showing the feathering of foot. 



Female adult: The female adult is colored like the male, but is appre- 

 ciably larger. 



Fully feathered young birds and young of the year are not to be dis- 

 tinguished from adults by their plumage. 



Downy young: The downy young vary from pure cotton-white to dull 

 buffy white. 



