Why did dozens of birds suddenly fall from the sky in Mexico?

A viral video caused surprise on social networks after showing how a flock unexpectedly fell to the ground for unknown reasons.


Theories pointed to 5G or even harmful gases, but now there is a postulate that makes more sense.

A few days ago, a viral video stole the attention of social networks . A security camera in Mexico  recorded how a flock suddenly fell to the ground for no apparent reason. The images went around the world.

In the video you can see how migratory birds fall as if they were smoke, with a large number of them remaining on the ground. In later images it is concluded that the birds were already found as corpses.

What happened to the flock?

The incident occurred on the morning of February 7, according to local reports, in the city of Cuauhtémoc, in northern Mexico. The birds tend to breed further north, in the US and Canada, and migrate south to spend the winter in the Latin American country.

According to the local newspaper El Heraldo de Chihuahua , which was the first to report the story, a veterinarian suggested that the incident could be blamed on high levels of contamination, caused by the use of wood-burning heaters, agrochemicals and the cold weather in the area.

Another suggestion was that the birds were electrocuted while resting on power lines. There was speculation on social media that it could have been caused by 5G technology.

But with the viralization of the case, it came to the eyes of other specialists. The Guardian reports the testimony of Dr. Richard Broughton, an ecologist at the UK Center for Ecology and Hydrology, who had another answer: a predatory bird.

Broughton said that although he couldn’t see a raptor in the footage, he was 99% sure it was caused by a predatory bird. A predator could have caused the birds to swarm tightly and push them to the ground, with the taller birds forcing the shorter ones to crash into buildings or the ground.

“It appears that a raptor, such as a peregrine or a falcon, has been chasing a flock, as they do murmuring starlings, and have crashed when the flock was forced down,” he said. “You can see that they act like a wave at first, like they’re being pulled in from above.”

Dr. Alexander Lees, Senior Lecturer in Conservation Biology at Manchester Metropolitan University, agreed. “For my part, from video and without toxicology, I would still say the most likely cause is the flock muttering to avoid a predatory raptor and hitting the ground,” he said.

“There always seems to be a knee-jerk response to blame environmental pollutants, but collisions with infrastructure are very common. In a very tight flock, birds follow the movements of the bird in front rather than interpret their wider environment, so it is not unexpected that such events occur occasionally.”