AVES FALCONID/C. 



599 



female. P. U. O. C. 8311. Rio Chico dc Santa Cruz, Patagonia, 15 

 March, 1898. A. E. Colburn, collector. Or. No. 307. 

 Size. Like that of adults ; the female larger than the male. 

 Color. 



FIG. 299. 



Circus citier tus. Female, immature. P. U. O. C. 8311. About one-fourth natural size. 



General color : Varying shades of brown throughout. 



Head : Forehead narrowly white ; region in front of eye whitish and 

 with many recurved blackish hairs. Crown deep brown, the feathers 

 bordered and edged narrowly with bright cinnamon. A well defined 

 broad supraciliary stripe of fulvous white, reaching back from the forehead 

 to the region above the ear-coverts, defines the crown ; the region below 

 the eye colored like the supraciliary streak, almost reaching it in front and 

 separated from it behind the eye by a broad postocular region of dark 

 brown ; cheeks and ear-coverts like the postocular region deep brown in 

 color, but with some streaking of cinnamon ; facial ruff fulvous like the 



