2OI2 



THE DIURNAL BIRDS OF PREY 



and cheeks are dark brown; the sides and back of the neck brown, with yellowish- 

 white streaks; the feathers of the back brown, with straw-colored or fulvous mar- 

 gins, and the feathers of most of the under parts ochrey colored, with brown 

 margins in the region of the chest, whereby a general striped appearance is produced. 

 The chimango (/. chimango) of the southern portion of South America and Tierra 

 del Fuego differs by having the under parts and under wing coverts of a brownish- 



FALKLAND ISI.AND AND CHIMACHIMA CARACARAS. 



(One-fourth natural size.) 



ochre color in the adult; the feathers of the under surface of the body having dark 

 brown shaft stripes. 



Writing of the habits of these birds, which he collectively designates carrion 

 hawks, Darwin states that chimangos may often be seen in company with caranchas, 

 although the two are by no means friends. ' ' When the carancha is quietly seated 

 on the branch of a tree or on the ground, the chimango often continues for a long 



