My office is on the 25th floor of an office building in downtown Minneapolis. On any day when I look out my windows, I see peregrine falcons cruising, looking for prey–pigeons, mostly. It is not unusual to see a falcon dive-bomb a pigeon, bring his carcass to a ledge on my building, and eat him. Concrete canyons like the ones my office overlooks have turned out to be excellent habitats for predators like the peregrine falcon, and they have flourished in recent decades.
Still, both falcons and pigeons are native to a more rural environment. This BBC video–filmed, seemingly, with a miniature camera mounted on the back of a pigeon–shows an encounter between a peregrine falcon and a group of pigeons, up close: