The Striated Caracara, Phalcoboenus australis, is a bird of prey of the Falconidae family. In the Falkland Islands it is known as the Johnny Rook.

The adults' plumage is almost black in color, while the legs and lores are orange and the neck is flecked with grey. The first year juveniles have an orange or light red down, which they lose after their first molt. Full adult plumage is acquired only in the fifth year.

It breeds in several islands in Tierra del Fuego, but is more abundant in the Falklands. Though it was once considered common in the Falklands archipelago, it now only nests in the outlying islands where it breeds around penguin and albatross colonies.

The Striated Caracara is primarily a scavenger, feeding on carrion, mainly dead seabirds and dead sheep, offal and food scraps. Often it is known to steal red objects such as clothing or handkerchiefs, possibly because red is the color of meat. Like all falconiformes it has excellent color vision which easily surpasses that of any known mammal. Often it will also raid dustbins and move rocks to get food from underneath, thus proving themselves to be one of the most intelligent of the birds of prey. Its habit of attacking newborn lambs and weakened sheep has led it to be ruthlessly persecuted by sheep farmers.

The population in the Falklands is estimated at 500 breeding pairs. Juveniles and indeed, adults, are almost entirely fearless of humans and treat their approach with indifference. Over time, conflict with the sheep farmers has led to a great reduction in their numbers. This is now being corrected by the Falkland Islanders.

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