red-backed hawk, variable hawk (buteo polyosoma) juvenile.

accipitridae aguilucho america argentina backed beautiful biodiversity bird birding birdwatching black buteo endangered feathers flight forest grassland hawk head hunt hunter ibera jungle juvenile marshes national natural nice ornithology pampas pantanal park patagonia peninsula photography polyosoma portrait predator raptor raven red scavenger south species trip valdes variable vulture wetland wildlife