This is a highland species of puna habitat where it typically forages on the ground.. Adults are strikingly patterned black and white, but juveniles such as this are drab brown overall. These juveniles are similar to juvenile White-throated Caracara (P. albogularis) and not always separable. However White-throated ranges further to the south. Formerly lumped with the Carunculated Caracara (P. carunculatus) and the White-throated Caracara, these three are now considered to to be allospecies. Canon SX50 HS.
References:
Bierregaard, R.O., Jr & Kirwan, G.M. (2018). Mountain Caracara (Phalcoboenus megalopterus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53190 on 9 April 2018).
Mountain Caracara (Phalcoboenus megalopterus), In Neotropical Birds Online (, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/moucar1