This is one of the rarest raptors in the world with an estimated breeding population of about 750-850 pairs. It is also the southernmost raptor in the world. It is a coastal bird, surviving on offshore islands. The adult (top) is wearing a yellow band with black letters indicating it was banded on Saunders Island by the Falklands Conservation Project. This near threatened species feeds largely on carrion, but it has been heavily persecuted on the Falklands by ranchers who believe kills newborn lambs. It is now protected but remains virtually absent from Port Stanley where formerly common. It takes five years to reach full adult plumage. Canon PowerShot SX50 HS
References:
Bierregaard, R.O., Jr, Kirwan, G.M. & Garcia, E.F.J. (2018). Striated Caracara (Phalcoboenus australis). 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/53192 on 16 May 2018).
BirdLife International. 2016. Phalcoboenus australis. The IUCN Red List of Threatened Species 2016: e.T22696247A93551504. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22696247A93551504.en. Downloaded on 16 May 2018.