Merlin enchants the sky with wonderful wizardry

A few days ago, a Co Cork reader, George Harding, dropped me an email to say that he’d found my recent article about throngs of rooks darkening my local sky at sunset intriguing because he, too, has flocks of rooks over-flying the view in front of his home at fall of light.
Furthermore, he had something, also intriguing, to report about a rook attack on a small bird-shaped like a swift and just as fast-flying.