The first raptor I saw on arriving in Los Llanos was predictably this one, Crested caracara.
The bird in question was feasting on the flattened remains of heaven only knows what on the side of a road. Nice. Happily this one opted for a more scenic location exploring a tree branch along the side of the river.
As the roadside behaviour suggests these are opportunistic feeders and they show all the intelligence require for such behaviour. By way of example I've always had a soft spot for caracara after a falconer told me about how one of his Johnny Rooks used to like to delve into women's handbags to see what goodies it could find and steal. This one was keeping its eye on us as I think it knew we had bait in the form of raw chicken on the boat.
It might even have got some had it stayed with us but something below caught its eye and away it sailed. I was surprised how skittish this species was in general - this was the only individual I got within (decent) photo range of notwithstanding their abundance.