Locals in northern China were left in awe as an astonishing number of birds densely filled the skies, evoking scenes reminiscent of the magical world of Harry Potter's Hogwarts.

The video was filmed in Ulanhot in Inner Mongolia on October 20.

The filmer named Sun said: "It was like a dark blanket had been thrown across the sky, there were so many birds, It was truly a jaw-dropping sight, looking like the scene in Harry Potter."

In response to queries about whether the unusual occurrence could be an omen or signal of upcoming seismic activity, the Ulanhot Seismological Bureau assured the public that there were no earthquake warnings tied to the event, suggesting the weather might be a more likely trigger for the birds' exceptional behaviour.

The video was provided by local media with permission.

10月20日，内蒙古乌兰浩特。天空中惊现大量鸟类盘旋，密密麻麻布满天空。拍摄者孙女士称，天上黑压压一片，鸟特别多，很震撼，很像哈利波特魔法学院的景象，此前从未见过这么多。
针对此事，乌兰浩特地震局回应称，没有收到地震预警的相关信息，可能是天气原因导致的。