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She compares him to a peregrine falcon because “his frame rate operates at an entirely different speed to everybody else’s.”

Ms Merriman said the video appeared to show the starlings had been successful as the peregrine falcon was not seen to get any of the birds.

You might spot a peregrine falcon or other raptor, including kestrels, which nest there.

The number of peregrine falcons at Yosemite National Park has soared over the past 15 years since the launch of a protection plan for the once-endangered raptors that nest in the park’s cliffs and peaks.

A laser beamed into a bird box has disturbed nesting peregrine falcons.