A solid 1000-2000 birds are shoved out of the sky and against roofs, sidewalks, cars and the pavement as some very odd energy literally blows them out of the sky. Just as the video begins you can see them at the very top edge of the video, flying to the left, then in a flash all of them are hammered into the pavement, killing many.
Its truly strange, because there is obviously no wind at all, but some force slams them to the ground. It is clearly force that drives them down.
Here is a twitter video. More data but slightly lower resolution. Watch the top edge of your video.
WARNING: GRAPHIC CONTENT
Security footage shows a flock of yellow-headed blackbirds drop dead in the northern Mexican state of Chihuahua pic.twitter.com/mR4Zhh979K
— Reuters (@Reuters) February 14, 2022