594 



PATAGONIAN EXPEDITIONS : ZOOLOGY. 



thighs, feathered portion of the legs, and the under tail-coverts ; the axil- 

 laries are much the same in marking, but the cinnamon bars are some- 

 what shaded with ashy blue ; this is also true of the cinnamon barring on 

 the sides beneath the wing ; the lower wing-coverts are white. 



Bill : Dark horn-brown, with blue undertone ; dull greenish blue. 



Iris : Pale lemon-yellow. 



FIG. 297. 



Circus cinereus. Adult male. P. U. O. C. 7904. Detail of foot from front. 



Feet: Bright orange yellow. 



Adult male (the first breeding plumage). P. U. O. C. 8310. Rio 

 Chico de Santa Cruz, Patagonia, 15 March, 1898. A. E. Colburn, col- 

 lect. Or. No. 306. Resembles the full adult described. . 



Head : Forehead and lores white. Crown deep seal-brown, suffused 

 with slaty or smoke color and with cinnamon tints showing through. 



