AVES STRIGID^. 7II 



white, broadly streaked with dull ash-brown ; the thighs yellowish brown, 

 barred with dusky brown ; under tail-coverts white, broadly streaked with 

 dull ash-brown. 



Bill : Bluish horn, becoming yellow at the tip. 



Iris : Orange-yellow ; in some individuals straw-yellow. 



Fig. 363. 



Glaticidhun naiiuin. Feathering of foot. Natural size. 



Feet : Feathered to the toes ; the feathering on the tops of the toes 

 silky, hair-like and with obscure brown markings on a whitish ground. 



The adult female is like the adult male in color. 



Young birds of the year and immature birds have a tendency to a 

 reddish-brown suffusion and the spotting of lighter shade, which is white 

 or inclined to white ; in the adults is never white, but always yellowish- 

 buff; the whole upper surface is more uniform, the streaking and spotting 

 being obscured. 



An adult female, 7876, P. U. O. C, Pacific Slope, upper waters of Rio 

 Chico de Santa Cruz, Cordillera of Patagonia, 13 March, 1897, J- B. 

 Hatcher, is much more reddish throughout than are other birds taken at 

 the same time and place and suggests two phases of adult dress in the 

 species. 



Geographical Range. — Chili and Patagonia ; northern Tierra del Fuego ; 

 Argentine Republic as far north as 33° south latitude (Cordoba). 



This dwarf owl was found by the Princeton naturalists wherever they 

 were in a partly wooded or in open country where there was some bush 

 or tree growth. The series collected by these workers forms the basis of 

 the above descriptions, and it is noticeable that the birds appear to be 

 smaller than those used by other systematists ; this applies to both sexes. 



